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510 Solar Irradiance Meter

The TPI 510 is an easy to use, solar irradiance meter for measurement of not only solar radiation, but all measureable light sources including all visible light.

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505 Optical & Contact Tachometer

Use the 505 photo / contact tachometer to determine RPM and surface speed. The 505 is a combination photo and contact tachometer that also measures surface speeds of belts and wheels.

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