Extech 461750-NIST, PocketTach Mini Contact Tachometer with NIST certificate - 461750-NIST
PocketTach Mini Contact Tachometer with NIST certificate - more info check here: http://www.buymeasuringtools.com/Extech-461750-NIST-PocketTach-Mini-Contact-Tachometer-with-NIST-certificate-10148068/
Quick Brief
Brand Name: EXTECH
Model Number: 461750-NIST