LCD Digital Laser Photo Tachometer Non Contact RPM Tach Speed Gauge Engine New T

0.1 RPM (2.5 ~ 999.9 RPM). 1 RPM (over 1,000 RPM). Digital display gives exact RPM with on guessing or errors. The RPM of motors and machine parts. Testing Range: 2.5 ~ 99,999 RPM (rate / min). Circuit: Exclusive one-chip of microcomputer LSI circuit.

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