MODEL 1512 A / B / C / D / ABC
Radius gauge have concave and convex blades. With nickel plated case and locking screw, For the checking of sectors of circle.
| Model | No. of Blades | Radius mm | Leads,mm |
| 1512 A | 17 | 1-7 | 1-3 = 0.25, 3-7 = 0.5 |
| 1512 B | 16 | 7.5-15 | 7.5-15=0.5 |
| 1512 C | 20 | 15.5-25 | 15.5-25 = 0.5 |
| 1512 D | 32 | 25-40 | 25-40 = 0.5 |
| 1512 ABC | 53 | 1-25 | 1-25 = 0.5 |