Free newsletter:
NDT promos & resources.


There are 0 items currently in your shopping cart
1 - 1 of 1
Crack Depth Meter
Karl Deutsch : RMG 4015 Crack Depth Gauge
Crack Depth Gauge

Crack depth measurements are used to determine if a part can be economically repaired or possibly to determine if a shaft or other component may remain in service while a replacement part obtained.

The Karl Deutsch RGM 4015 crack depth gauge measures crack depths on workpieces of iron, ferrous and austenitic steels and can also be used for cracks in copper, brass, aluminium and other non-ferrous metals.

The RGM 4015 uses the electrical potential principle: A probe with four spring-loaded, gold plated, contact pins is positioned across the crack to be measured on the workpiece. A constant alternating current is passed via two of the pins into the workpiece; the two other pins measure the voltage drop across the crack from which the depth of the crack is derived.  The alternating current creates a skin effect, which forces the current to follow the surface of the conductor and therefore follows the contour of the crack. The instrument compares the change in current on between a good area and compares it with current over a crack. The amount of change is proportional to the crack depth.

Price includes:

1- RGM 4015

1-  Carrying case

1- Interface cable

1- RMSQ 0 degree Probe

1- Calibration block, 0 to 10 mm crack depth



Please Note: Check an item and click on the text "Add To Cart" in order to select an item.  Simply checking a box will NOT add the item to your shopping cart.
Model Description Part No. Price Add To Cart


Crack Depth Gauge Kit with; RGM 4015,Carrying case,Interface cable,RMSQ 0 degree Probe,Clibration block, 0 to 10 mm crack depth


Please email us or
call 1-800-635-9108 or 913-432-7080
for current pricing.

1 - 1 of 1