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          <link:definition>999059 - Disclosure - INCOME TAXES (Details 3)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/IncomeTaxesDetails4" id="IncomeTaxesDetails4">
          <link:definition>999060 - Disclosure - INCOME TAXES (Details 4)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/IncomeTaxesDetailsNarrative" id="IncomeTaxesDetailsNarrative">
          <link:definition>999061 - Disclosure - INCOME TAXES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/NotesPayableAndFinancingTransactionsDetails" id="NotesPayableAndFinancingTransactionsDetails">
          <link:definition>999062 - Disclosure - NOTES PAYABLE AND FINANCING TRANSACTIONS (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/NotesPayableAndFinancingTransactionsDetails1" id="NotesPayableAndFinancingTransactionsDetails1">
          <link:definition>999063 - Disclosure - NOTES PAYABLE AND FINANCING TRANSACTIONS (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/NotesPayableAndFinancingTransactionsDetailsNarrative" id="NotesPayableAndFinancingTransactionsDetailsNarrative">
          <link:definition>999064 - Disclosure - NOTES PAYABLE AND FINANCING TRANSACTIONS (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/LeasesDetails" id="LeasesDetails">
          <link:definition>999065 - Disclosure - LEASES (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/LeasesDetailsNarrative" id="LeasesDetailsNarrative">
          <link:definition>999066 - Disclosure - LEASES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/CommitmentsAndContingenciesDetailsNarrative" id="CommitmentsAndContingenciesDetailsNarrative">
          <link:definition>999067 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetails" id="Share-basedCompensationDetails">
          <link:definition>999068 - Disclosure - SHARE-BASED COMPENSATION (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetails1" id="Share-basedCompensationDetails1">
          <link:definition>999069 - Disclosure - SHARE-BASED COMPENSATION (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/Share-basedCompensationDetailsNarrative" id="Share-basedCompensationDetailsNarrative">
          <link:definition>999070 - Disclosure - SHARE-BASED COMPENSATION (Details Narrative)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails" id="MajorCustomersSuppliersDetails">
          <link:definition>999071 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails1" id="MajorCustomersSuppliersDetails1">
          <link:definition>999072 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details 1)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails2" id="MajorCustomersSuppliersDetails2">
          <link:definition>999073 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details 2)</link:definition>
          <link:usedOn>link:presentationLink</link:usedOn>
          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/MajorCustomersSuppliersDetails3" id="MajorCustomersSuppliersDetails3">
          <link:definition>999074 - Disclosure - MAJOR CUSTOMERS &amp; SUPPLIERS (Details 3)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/NetIncomePerShareDetails" id="NetIncomePerShareDetails">
          <link:definition>999075 - Disclosure - NET INCOME PER SHARE (Details)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
        </link:roleType>
        <link:roleType roleURI="http://pro-dex.com/role/CommonStockShareRepurchaseProgramDetailsNarrative" id="CommonStockShareRepurchaseProgramDetailsNarrative">
          <link:definition>999076 - Disclosure - COMMON STOCK &#8211; Share Repurchase Program (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
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          <link:definition>999077 - Disclosure - SUBSEQUENT EVENTS (Details Narrative)</link:definition>
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          <link:usedOn>link:calculationLink</link:usedOn>
          <link:usedOn>link:definitionLink</link:usedOn>
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    <element id="pdex_PropertyPlantAndEquipmentEstimatedUsefulLive" name="PropertyPlantAndEquipmentEstimatedUsefulLive" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_BacklogAmount" name="BacklogAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AssetAcquisitionConsiderationTransferredCash" name="AssetAcquisitionConsiderationTransferredCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AssetAcquisitionConsiderationTransferredPromissoryNotePayableToSeller" name="AssetAcquisitionConsiderationTransferredPromissoryNotePayableToSeller" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_TotalConsideration" name="TotalConsideration" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationships" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCustomerRelationships" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PromissoryNotePayableToSeller" name="PromissoryNotePayableToSeller" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AccruedLiabilities" name="AccruedLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AmountsReclassifiedToCostOfSales" name="AmountsReclassifiedToCostOfSales" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AmountsAllocatedToDiscountsForStandaloneSellingPrice" name="AmountsAllocatedToDiscountsForStandaloneSellingPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AmountsReclassifiedToRevenue" name="AmountsReclassifiedToRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PreferredStockLongterm" name="PreferredStockLongterm" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AvailableForSaleSecuritiesAmortizedCosts" name="AvailableForSaleSecuritiesAmortizedCosts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_MarketableSecuritiesUnrealizedLoss" name="MarketableSecuritiesUnrealizedLoss" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_MarketableSecuritiesUnrealizedGain" name="MarketableSecuritiesUnrealizedGain" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WarrantDescription" name="WarrantDescription" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_InventorySubAssemblies" name="InventorySubAssemblies" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AccumulatedDepreciation" name="AccumulatedDepreciation" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnvoucheredInventoryInTransitCurrent" name="UnvoucheredInventoryInTransitCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_OperatingLeaseLiabilityCurrents" name="OperatingLeaseLiabilityCurrents" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AccruedInterestExpenseOnDevelopmentContractsCurrent" name="AccruedInterestExpenseOnDevelopmentContractsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_AccruedLossesOnDevelopmentContractsCurrent" name="AccruedLossesOnDevelopmentContractsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncomeLocationBalanceAxis" name="IncomeLocationBalanceAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="pdex_IncomeLocationBalanceDomain" name="IncomeLocationBalanceDomain" abstract="true" nillable="true" xbrli:periodType="duration" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_BankFinanced" name="BankFinanced" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ProductWarrantyAccrualAmortization" name="ProductWarrantyAccrualAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestTaxRate" name="IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterestTaxRate" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRates" name="IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRates" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRates" name="EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRates" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_NontaxableOrNondeductibleItems" name="NontaxableOrNondeductibleItems" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_NontaxableOrNondeductibleItemsPercentPretaxIncome" name="NontaxableOrNondeductibleItemsPercentPretaxIncome" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UncertainTaxPositions" name="UncertainTaxPositions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UncertainTaxPosition" name="UncertainTaxPosition" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncomeTaxReconciliationShareBasedCompensation" name="IncomeTaxReconciliationShareBasedCompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxAssetsResearchAndOtherCredits" name="DeferredTaxAssetsResearchAndOtherCredits" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_Section174Capitalization" name="Section174Capitalization" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxAssetLeaseLiability" name="DeferredTaxAssetLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxLiabilitiesRightOfUseAsset" name="DeferredTaxLiabilitiesRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxLiabilitiesDeferredStateTax" name="DeferredTaxLiabilitiesDeferredStateTax" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxAssetsUnrealizedGainOnAvailableforSaleSecuritiesGross" name="DeferredTaxAssetsUnrealizedGainOnAvailableforSaleSecuritiesGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DeferredTaxAssetLiabilitiesNet" name="DeferredTaxAssetLiabilitiesNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsOnFederalTax" name="UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsOnFederalTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsUponStateTax" name="UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsUponStateTax" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPosition" name="UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPosition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_UnrecognizedTaxBenefit" name="UnrecognizedTaxBenefit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_LoanOriginationFeesRepaid" name="LoanOriginationFeesRepaid" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PromissoryNoteAmount" name="PromissoryNoteAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_BalloonPayment" name="BalloonPayment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PercentAvailable" name="PercentAvailable" nillable="true" xbrli:periodType="instant" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PercentageOfLatePaymentFee" name="PercentageOfLatePaymentFee" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_IncreasedPercentageOfDefaultLatePayment" name="IncreasedPercentageOfDefaultLatePayment" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_OperatingLeaseLiabilities" name="OperatingLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_FinanceLeaseLiabilities" name="FinanceLeaseLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_OperatingLeaseLiabilityCurrentPortion" name="OperatingLeaseLiabilityCurrentPortion" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_LeaseAndRentalExpenses" name="LeaseAndRentalExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_RentExpense" name="RentExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_DefinedContributionPlanEmployeeContributionPercentageOfEmployeeCompensationMaximum" name="DefinedContributionPlanEmployeeContributionPercentageOfEmployeeCompensationMaximum" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ForfeitedMatchContributionsUsedToReduceMatchExpense" name="ForfeitedMatchContributionsUsedToReduceMatchExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsForfeitedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsInPeriod" nillable="true" xbrli:periodType="duration" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_NumberOfRestrictedSharesIssued" name="NumberOfRestrictedSharesIssued" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriod" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_PercentageOfConcentrationsRisk" name="PercentageOfConcentrationsRisk" nillable="true" xbrli:periodType="duration" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageShareOutstanding" name="WeightedaverageShareOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageSharesOutstanding" name="WeightedaverageSharesOutstanding" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="pdex_WeightedaverageSharesUsedInCalculationOfDilutedEarningsPerShare" name="WeightedaverageSharesUsedInCalculationOfDilutedEarningsPerShare" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
</schema>
