2 - Balance Sheet Details: Schedule of Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2018

Tables/Schedules

Schedule of Valuation and Qualifying Accounts

	December 31, 2018	December 31, 2017
Allowance for Doubtful Accounts:
Balance at beginning of year………………………….	$ 140,000	$   150,000
Charges to statement of income……………………...	0	6,435
Write-offs………………………………………………...	0	(16,435)
Balance at end of year…………………………………	$   140,000	$   140,000

	December 31, 2018	December 31, 2017
Inventory Valuation Reserves:
Balance at beginning of year………………………….	$ 564,000	$   562,000
Charges to statement of income……………………...	17,870	75,023
Write-offs………………………………………………...	(2,870)	(73,023)
Balance at end of year…………………………………	$   579,000	$   564,000