Balance Sheets (Parenthetical) - USD ($)	Mar. 31, 2019	Mar. 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 26,000	$ 20,500
Inventories, reserve for obsolescence	50,000	21,000
Accumulated amortization	$ 266,028	$ 238,571
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock and additional paid-in capital, shares authorized	100,000,000	100,000,000
Common stock and additional paid-in capital, shares issued	11,558,355	10,683,355
Common stock and additional paid-in capital, shares outstanding	11,558,355	10,683,355