Model 103 Series
Mechanical outside micrometers to EN ISO 3611, in eight consecutive 25 mm ranges from 0 to 200 mm, with 0.01 mm graduation, carbide-tipped faces, spindle lock and ratchet stop.
Prices on request. Contact us for availability and quotations.
The Mitutoyo 103 Series is the standard mechanical screw-gauge micrometer for external measurement of shafts, pins, turned parts, washers and machined plate. The reading is taken from the satin-chrome sleeve and thimble, so there is no battery, no display and nothing that fails in a dusty or oily store.
A ratchet stop applies a consistent measuring force, which is what makes readings repeatable between operators, and a spindle lock holds the size while the part is removed and the value is read. The measuring faces are carbide tipped and micro-lapped so they stay flat and parallel under daily use. The instruments conform to EN ISO 3611.
Each micrometer covers one 25 mm band: 103-137 (0 to 25 mm), 103-138 (25 to 50), 103-139-10 (50 to 75), 103-140-10 (75 to 100), 103-141-10 (100 to 125), 103-142-10 (125 to 150), 103-143-10 (150 to 175) and 103-144-10 (175 to 200 mm). Graduation is 0.01 mm throughout; accuracy is ±2 µm on the models up to 75 mm, ±3 µm from 75 to 150 mm and ±4 µm on the 150 to 175 mm and 175 to 200 mm models. The 100 to 200 mm models are supplied with a setting standard, since their zero cannot be checked by closing the anvil onto the spindle.
When ordering, state each diameter band to be covered; a workshop set is built from consecutive ranges rather than from one instrument.
| Product Type | Mechanical outside micrometer |
|---|---|
| Series | 103 Series |
| Models Available | 103-137 (M110-25) — 0 to 25 mm, 0.01 mm graduation, accuracy ±2 µm; 103-138 (M110-50) — 25 to 50 mm, 0.01 mm, ±2 µm; 103-139-10 (OM-75) — 50 to 75 mm, 0.01 mm, ±2 µm; 103-140-10 (OM-100) — 75 to 100 mm, 0.01 mm, ±3 µm; 103-141-10 — 100 to 125 mm, 0.01 mm, ±3 µm; 103-142-10 — 125 to 150 mm, 0.01 mm, ±3 µm; 103-143-10 — 150 to 175 mm, 0.01 mm, ±4 µm; 103-144-10 — 175 to 200 mm, 0.01 mm, ±4 µm |
| Measuring Range | 0 to 200 mm, in eight consecutive 25 mm bands, one band per micrometer |
| Graduation | 0.01 mm |
| Accuracy | ±2 µm (models to 75 mm); ±3 µm (75 to 150 mm models); ±4 µm (150 to 200 mm models) |
| Measuring Face | Carbide-tipped, micro-lapped |
| Standard | EN ISO 3611 |
| Frame | Steel frame with baked-enamel finish (stated for the 100 to 200 mm models); satin-chrome sleeve and thimble |
| Measuring Force Control | Ratchet stop, with spindle lock |
| Setting Standard | 100 mm, 125 mm, 150 mm and 175 mm setting standards supplied with 103-141-10, 103-142-10, 103-143-10 and 103-144-10 respectively; 103-144-10 is also supplied with a spanner key and fitted case |
