2. Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
2. Summary of Significant Accounting Policies (Details) [Line Items]
Repair and Calibration Revenue, Percentage of Revenue	14.90%	7.40%
Advertising Expense (in Dollars)	$ 200	$ 200
Deferred Revenue (in Dollars)	19,505	39,404
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Impairment of Intangible Assets, Finite-lived (in Dollars)	0	0
Product Warranty Expense (in Dollars)	203,783	230,028
Equipment [Member] | Maximum [Member]
2. Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	8 years
Equipment [Member] | Minimum [Member]
2. Summary of Significant Accounting Policies (Details) [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Intermediate Level TACAN Test Set [Member]
2. Summary of Significant Accounting Policies (Details) [Line Items]
Revenues (in Dollars)	$ 5,000,000