Tri-State Instruments Laboratory - Electrical and Electronics Instrumentation Sales, Service, Calibration and Distribution
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TSW Products

Tri-State Instrument Laboratory is the manufacturer and distributor of the TSW line of products.  Our TSW-23 10:1 Voltage Divider, The TSW-155 Motor Rotation Indicator and the TSW-45 Phase Sequence Indicator are hand crafted and tested to provide the user with accuracy and durability on testing up to 5000 Volts AC.

TSW-155 - Tri-State Instrument Laboratory TSW-22 - Tri-State Instrument Laboratory TSW-45 - Tri-State Instrument Laboratory