Dt-2234C+ Digital Optical Tachometer C5 simply attach both lenses to

simply attach both lenses to the case provided

Voltage: 12V

Galaxy Axiom R830

These screen protector is the only screen protector you can buy  that is not only scratch resistant

Dt-2234C+ Digital Optical Tachometer C5 simply attach both lenses toThe DT 2234C+ is a hand held digital optical tachometer for non contact measurement of rotational speed (RPM) or frequency. Each unit comes with its own calibration certificate, which reports the measurement error of the unit at 2 points across its range. Large LCD display Automatic Min Max Memory Soft carrying case & 200mm of reflective marking tape Display: 5 digits, 18mm high Range: 2. 5 99,999 RPM Resolution: 0. 1 RPM (2. 5 999. 9 RPM), 1 RPM