The REED SD-6100-NIST is the higher-capacity sibling of the SD-6020, measuring push and pull forces up to 100 kg (220 lb) with a 4-digit backlit LCD that reverses for easy reading in either load direction. It logs readings to an SD card at selectable sampling intervals from 1 second up to an hour, includes peak-hold and zero-adjustment functions, a real-time clock/date stamp, and an audible overrange alarm at full scale. This unit comes with a NIST-traceable calibration certificate for verified measurement accuracy.