Schedule of customer concentrations and foreign sales (Details) - USD ($)	3 Months Ended	6 Months Ended
Aug. 31, 2026	Aug. 31, 2025	Aug. 31, 2026	Aug. 31, 2025
Total sales	$ 1,550,000	$ 2,443,000	$ 3,681,000	$ 4,033,000
Asia Pacific [Member]
Total sales	507,000	930,000	1,244,000	1,527,000
EMEA [Member]
Total sales	952,000	1,424,000	1,883,000	2,321,000
Latin America [Member]
Total sales	$ 91,000	$ 89,000	$ 554,000	$ 185,000

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details