SCHEDULE OF NET INVENTORIES (Details) - USD ($)	Aug. 31, 2023	May 31, 2023
Accounting Policies [Abstract]
Raw materials	$ 1,454,000	$ 1,677,000
Work in progress	793,000	869,000
Finished products	162,000	182,000
Total gross inventory	2,409,000	2,728,000
Inventory reserves	(532,000)	(672,000)
Net inventory	$ 1,877,000	$ 2,056,000

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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