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Note 6 - Product Warranties (Details Textual) - USD ($)
12 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2021
Standard and Extended Product Warranty Accrual, Ending Balance $ 80,000 $ 75,000 $ 75,000
Product Warranty Expense 89,548 52,465 $ 55,592
Accounts Payable and Accrued Liabilities [Member]      
Standard and Extended Product Warranty Accrual, Ending Balance $ 80,000 $ 75,000