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This tachometer features both the ability to measure RPM (revolutions per minute) in rotational equipment and surface speed m/min (meter per minute) /..

This tachometer features both the ability to measure RPM (revolutions per minute) in rotational equipment and surface speed m/min (meters per minute) ..

For use with the REED R9500, R9600 and R9700 refractometers.

This SD series pH and ORP datalogging meter is capable of measuring 0.00 to 14.00 pH and 0 to 1999 mV (ORP). The SD-230 features automatic temperature..