Test Anvil for Calibrating James Test Hammers

Purchasing Notes

• Used with:
  • W-M-250 Manual Rebound Hammer
    
  • W-D-2000 Digital Rebound Hammer Complete System
    
  • W-D-1500 Digital Rebound Hammer Basic System
    

It is recommended that calibration of the test hammers be checked regularly usually after about 2000 strokes.The James Calibration Anvil (W-C-7312) has been designed for just that purpose.

The Calibration Anvil weighs approximately 48 lbs.(22.23 kg) and should be ordered separately.

Specifications

Weight: 49 lbs (22.23 kg)

Physical Size: 9.5" H x 6.0" dia. (241 mm H x 152.4 mm dia.)

Shipping Weight: 51 lbs. (23.1 kg)

Hardness of Insert: 65-67 HRC

Frequently Asked Questions

Q. My Test Hammer gives low or high readings

A. Using the Calibration Test Anvil as a reference, find the rebound number on the Test Anvil. If the number is 80 +/- 2, the Hammer calibration is good. If not, the Hammer needs to be adjusted. With the impact plunger out, remove the rear cap on the Hammer. There is a screw with two locking nuts in the cap. Adjust the screw position up or down accordingly, and recheck the rebound reading against the Calibration Test Anvil. When properly adjusted, be sure to tighten down the locking nuts in the cap. The Hammer is now ready to be used again.

Q. What if I have a Low Impact Test Hammer (W-M-255)

A. The Low Impact Test Hammer is calibrated in a similar way. The rebound number for this Hammer should be 75 +/- 2 on the Calibration Test Anvil.