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Note 5 - Product Warranties (Details Textual) (USD $)
3 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Oct. 31, 2014
Oct. 31, 2013
Product Warranties Disclosures [Abstract]        
Product Warranty Accrual $ 105,000us-gaap_ProductWarrantyAccrual $ 160,000us-gaap_ProductWarrantyAccrual $ 100,000us-gaap_ProductWarrantyAccrual $ 190,000us-gaap_ProductWarrantyAccrual
Product Warranty Expense 39,079us-gaap_ProductWarrantyExpense 20,539us-gaap_ProductWarrantyExpense    
Accounts Payable and Accrued Liabilities [Member]        
Product Warranties Disclosures [Abstract]        
Product Warranty Accrual $ 105,000us-gaap_ProductWarrantyAccrual
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableAndAccruedLiabilitiesMember
  $ 100,000us-gaap_ProductWarrantyAccrual
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_AccountsPayableAndAccruedLiabilitiesMember