Monarch Tach-4A Digital Programmable Optical Tachometer with Case

Pocket Laser Tach 200 Monarch Instrument

Monarch PLT200 KIT Model: 6125-011 Laser Tachometer , 0.5 To 20,000 RPM

Monarch Tach-4A Programmable Optical Tachometer with Case. DOES NOT POWER UP

Monarch Instrument Pocket Tach 100 Digital Tachometer RPM w/ Case & Manual

MONARCH Laser Tachometer: +/-0.05% RPM Accuracy, 0.001 RPM, 20,000 RPM Max

Monarch 6125-011 Laser Tachometer, 0.5 To 20,000 Rpm

Monarch Instrument Optical Tachometer With Case And Power Cord