Consolidated Balance Sheets - USD ($)	Sep. 29, 2018	Sep. 30, 2017
Current assets:
Cash and cash equivalents	$ 1,982,434	$ 1,283,673
Restricted cash		12,930
Marketable securities:
Held to maturity securities		360,253
Accounts receivable - trade	559,493	730,177
Inventories, net	1,368,696	1,358,344
Other current assets	142,279	135,693
Total current assets	4,052,902	3,881,070
Equipment and leasehold improvements	4,578,501	4,534,839
Less accumulated depreciation and amortization	(4,529,298)	(4,481,085)
Equipment and leasehold improvements, net	49,203	53,754
Total assets	4,102,105	3,934,824
Current liabilities:
Accounts payable	187,958	109,224
Customer deposits	35,628	53,886
Deferred revenue	2,106,514	484,121
Accrued liabilities:
Compensation and related expenses	220,544	215,984
Other current liabilities	18,405	55,376
Total current liabilities	2,569,049	918,591
Commitments and contingencies (Note 12)
Stockholders' equity
Common stock - par value $0.10 per share; 7,000,000 shares authorized, 1,850,403 issued and outstanding at September 29, 2018 and 1,839,877 issued and outstanding at September 30, 2017	185,041	183,988
Additional paid-in capital	4,134,371	4,139,002
Accumulated deficit	(2,786,356)	(1,306,757)
Total stockholders' equity	1,533,056	3,016,233
Total liabilities and stockholders’ equity	$ 4,102,105	$ 3,934,824