Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net loss	$ (93,199)	$ (103,351)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation	19,319	23,510
Change in operating assets and liabilities:
Accounts receivable-trade	99,339	184,725
Inventories	27,354	17,444
Prepaid expenses and other assets	(6,723)	(12,168)
Accounts payable and customer deposits	31,024	(4,206)
Accrued payroll and related expenses and compensated absences	(18,255)	(28,711)
Other current liabilities	2,924	(5,017)
Net cash provided by operating activities	61,783	72,226
Cash flows from investing activities:
Property, plant and equipment purchased	(41,636)	0
Net cash used in investing activities	(41,636)	0
Cash flows from financing activities:
Repayment of note payable	(11,475)	(10,967)
Purchase of treasury stock	0	(90)
Net cash used in financing activities	(11,475)	(11,057)
Increase in cash and cash equivalents	8,672	61,169
Cash and cash equivalents at beginning of period	923,117	896,667
Cash and cash equivalents at end of period	931,789	957,836
Supplemental Schedule of Cash Flow Information:
Interest	$ 4,116	$ 4,624