Reed R7100-nist Tachometer, Photo/contact, 99,999rpm/19,999 Rpm W/nist Cert

The REED R7100-NIST combines non-contact laser and physical-contact measurement in one tachometer, reading 10 to 99,999 RPM optically and 0.5 to 19,999 RPM via contact adapters, both at roughly +/-0.0...