Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Summary of Significant Accounting Policies (Details) [Line Items]
Extended Product Warranty Description	The extended warranties sold by the Company provide a level of assurance beyond the coverage for defects that existed at the time of a sale or against certain types of covered damage with coverage terms generally ranging from 5 to 7 years.
Extended Product Warranty Accrual	$ 408,219	$ 413,554
Recognition of Deferred Revenue	86,588	85,311
Deferred Revenue and Credits, Current	74,920	58,746
Revenues	$ 11,582,520	15,774,943
Property, Plant and Equipment, Depreciation Methods	straight-line basis
Deferred Revenue	$ 483,139	472,300
Product Liability Accrual, Component Amount	64,092	51,858
Repairs and Calibration [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Revenues	1,169,399	1,525,288
Replacement Parts [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Revenues	142,801	460,103
Extended Warranty [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Revenues	$ 86,588	85,311
Other Revenue [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Revenues		$ 48,159
Minimum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	5 years