The compact FDX is a low cost handheld digital force gage for measuring static and dynamic force with several useful features including unique pistol grip handle, 4 capacities:10 / 25 / 50 & 100 lbF ( 5 / 10 / 25 / 50 kgF ), selectable units: lbf, kgf, N & ozf, large 4 digit 0.7" backlit LCD display, USB output to (included) data logging software & Excel spreadsheet, 2 NiMH 20 hour rechargeable AAA batteries (included) for portable use and continuous AC power for stationary use, auto-off power conservation, peak readings captured and displayed at 1200 Hz and +/- 0.3% full scale accuracy, auto-Calibration with one full capacity weight, 20% off full scale tare, NIST Calibration Certificate.