Digital Tachometer Model : TM – 4100/TM – 4100D

Feature : 

•  Detection Distance up to 500mm
•  Large LCD 6 digits with backlight
•  Contact & Non-contact Measurements in one combo kit
•  Measurement distance : 40 to 500mm (1.58” ~19.7”)
•  USB Datalogger up to 30,000 data (TM-4100D)

Functions :

•  Auto -Range
•  Average
•  Max/Min
•  Auto Power saver
•  Hold
•  Buzzer ( on/off )