This is the disk styli #A-5003-5289. Disc styli are designed to inspect undercuts and grooves within bores which may be inaccessible to star styli. A range of disc styli offers a ‘radius end roller’ to enable groove width measurement. Silver steel tips are heat treated and precision ground to a high tolerance.
| Thread mount (DG) | M5 |
| Disk Depth (B) | 3.0 mm |
| Roller Depth (L) | 5.0 mm |
| Stem diameter (DS) | N/A |
| Disk diameter (DK) | 21.0 mm |
| Disk material | Silver Steel |
| Stem material | Stainless Steel |
| Mass | 5.23 g |
