Comtorgage

TESTING EQUIPMENT FOR AMPLIFIERS

Zero Checker
SP-639-A
Zero Checker
Fits into Amplifier, in place of expansion plug, to quickly check zero.
Digital Calibration Checker
SP-639-BD
Calibration Checker
SP-639-B
Digital Calibration Checker
Calibration Checker
Precision spindle fits into Amplifier, in place of expansion plug, to quickly check calibration thru its range.
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