CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net Sales:
Total net sales	$ 6,516,256	$ 6,695,778
Cost of sales:
Total cost of sales	2,792,452	2,728,057
Gross profit	3,723,804	3,967,721
Operating expenses:
Research and development	670,445	736,525
Selling, general and administrative	2,261,863	1,806,982
Total operating expenses	2,932,308	2,543,507
Operating income	791,496	1,424,214
Interest income	115,892	96
Other income	18,196	16,238
Income before income taxes	925,584	1,440,548
Income tax expense	226,933	307,490
Net income	$ 698,651	$ 1,133,058
Net income per common share:
Basic	$ 0.04	$ 0.07
Diluted	$ 0.04	$ 0.07
Weighted average shares outstanding:
Basic	17,316,766	17,246,372
Diluted	17,326,177	17,246,372
Product
Net Sales:
Total net sales	$ 6,149,357	$ 6,695,778
Cost of sales:
Total cost of sales	2,735,046	$ 2,728,057
Engineering development contracts
Net Sales:
Total net sales	366,899
Cost of sales:
Total cost of sales	$ 57,406