REED K4010 Photo/Contact Tachometer

REED DT-1236L Photo/Contact Tachometer with Laser

Reed AT-6 Photo Non-Contact Tachometer

Extech 461920 Mini Laser Photo Tachometer Counter

Extech 461880 Vibration Meter + Laser Combination Tachometer

Tenmars TM-4100 & TM-4100D Tachometer