CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net Sales:
Total net sales	$ 7,959,208	$ 6,935,976	$ 21,815,917	$ 20,477,574
Cost of sales:
Total cost of sales	3,224,562	2,879,462	8,617,317	8,270,729
Gross profit	4,734,646	4,056,514	13,198,600	12,206,845
Operating expenses:
Research and development	851,296	676,381	2,387,939	2,062,937
Selling, general and administrative	2,395,714	1,694,233	7,104,212	5,226,015
Total operating expenses	3,247,010	2,370,614	9,492,151	7,288,952
Operating income	1,487,636	1,685,900	3,706,449	4,917,893
Interest income	185,652	10,429	432,495	10,871
Other income	90,049	21,608	131,504	49,401
Income before income taxes	1,763,337	1,717,937	4,270,448	4,978,165
Income tax expense	339,958	358,763	877,315	1,056,363
Net income	$ 1,423,379	$ 1,359,174	$ 3,393,133	$ 3,921,802
Net income per common share:
Basic	$ 0.08	$ 0.08	$ 0.19	$ 0.23
Diluted	$ 0.08	$ 0.08	$ 0.19	$ 0.23
Weighted average shares outstanding:
Basic	17,576,969	17,261,349	17,415,358	17,253,822
Diluted	17,577,588	17,265,798	17,419,265	17,255,305
Product
Net Sales:
Total net sales	$ 7,893,625	$ 6,935,976	$ 21,383,435	$ 20,279,371
Cost of sales:
Total cost of sales	3,202,870	$ 2,879,462	8,538,219	8,253,981
Engineering development contracts
Net Sales:
Total net sales	65,583		432,482	198,203
Cost of sales:
Total cost of sales	$ 21,692		$ 79,098	$ 16,748