Shimpo DT-207LR Tachometer with 6" Circumference Wheel and LED Display is a versatile handheld tachometer that can be used for contact and non-contact applications. The rugged die-cast aluminum housing is optimal when operating in harsh conditions. RPM measurement up to 20 feet away can be made via the embedded laser technology. The Shimpo DT-207LR has adjustable measuring units with the turn of a knob to fit your application as well as memory capacity up to 10 records.The Shimpo DT-207LR Digital Combination Tachometer comes standard with a nice fitted case as well as a NIST Certificate. Made in Japan.