Impact Device Descriptions:
D Probe - up to 68 HRC
This is the standard unit for the majority of hardness measurements with a wide measuring range. Impact bodies tend to wear out at the high end of the hardness range.
DC Probe - up to 68 HRC
This probe is short and convenient in small places - requires a loading stick.
DL Probe - up to 68 HRC
This probe as a more slim front section (Ø 4 x 50 mm), that is used in confined surfaces such as gear wheels.
D+15 Probe - up to 68 HRC
This probe has a slim front section (elongated impact body, coil position 15 mm elevated) and is used for measuring grooves or recessed surfaces.
C Probe - up to 70 HRC
The C Probe is used on surface hardened, coated thin wall components.
This probe reduced impact energy (≈1/4 of the D Probe Unit).
Impact Device G - to 646 HB
The G Probe is used on heavy, rough, cast and forged work pieces.
This probe has increased impact energy (≈9 x of the D Probe Unit).