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DI-4B-25 DI-4B-25 Digital Torque Tester for Impact Wrenches and Air Tools

Calibrate your own air tools and impact wrenches and save time!

The DI-4B-25 provides quick torque measurement and is perfect for immediate calibration of air tools and impact wrenches, but also calibrates any type of manual wrench.

This torque meter has a digital display and gives accurate values of the peak value of each direction. The number of strokes for the selected period is also displayed.

It is ± 0.5% ± 1 LSD error-free and has Peak, Real Time and Peak Down modes. The peak values for SPC (statistical process control) are also specified via the RS232 output.

Joint with 5 / 16-18 thread is included (thread sizes 10-24, 3 / 8-16 and M5, M6 and M10 sold separately).



*Please note: The DI-4B-25 torque tester is not CE certified




  • Heavy duty metal construction
  • Displays number of blows for selected period (0.1 - 9.9 sec)
  • Peak, Real Time and Peak Down measuring mode (selectable)
  • Selectable Units: lb-ft, kg-m and N-m
  • Both clockwise and counterclockwise operation
  • RS-232 peak data output for SPC capability
  • Soft joint, hard joint and AC adapter/charger included
  • Runs on internal NiCd batteries (8 hour use)
  • 2 Year Warranty
  • Includes NIST Traceable Calibration Certificate
  • ISO/IEC 17025 Long-form Certificate & Test Data is optionally available


Related Products

SW-1 Data Acquisition Software for Force Gauges & Torque Gauges

  • Full SPC and graphing capabilities
  • Automates your data collection
  • Provides a running log of all measurements along with a chart of the data as well as statistical information

More details

SW-1 Data Acquisition Software for Force Gauges & Torque Gauges

Complete Kit
The DI-4B-25 is supplied as a complete kit including torque tester, joint simulators, ac adapter/charger, operating instructions and calibration certificate

Capacity0.1~220.0 lbf-in
0.1~250.0 kgf-cm
0.01~25.00 N-m
Accuracy± 0.5% F.S., ±1 LSD