310 SERIES STANDARD MICROMETER HEADS
Standard: Factory Standard

| Code no. | Range | Measuring face | Resolution |
| MW310-25 | 0-25mm | Flat | 0.01mm |
| MW310-25B | 0-25mm | Spherical | 0.01mm |
311 SERIES STANDARD MICROMETER HEADS
Standard: Factory Standard

| Code no. | Range | Measuring face | Resolution | |
| MW311-25A | 0-25mm | Flat | 6mm | 0.01mm |
| MW311-25B | 0-25mm | Spherical | 8mm | 0.01mm |
| MW311-50A | 0-50mm | Flat | 6mm | 0.01mm |
| MW311-50B | 0-50mm | Spherical | 8mm | 0.01mm |