Digital Contact Tachometer,laser tachometer ,digital tachometer, Digital Contact Tachometer,laser tachometer Specification:Display:5 digits, 31mm blue backing LCD display Test Range: PHOTO TACH 2.5 to 99,999RPMCONTACT TACH ... .9m/minResolution: PHOTO TACH: 0.1RPM (2.5 to 999.9 RPM) 1RPM (over 1000 RPM)CONTACT TCAH: 0 ... 32 to 122)Size: 205×76×40mm 6236B Digital Laser & Contact Tachometer with Backlight