The Mitutoyo Holtest mechanical three-point internal micrometer complete sets include holtests capable of measuring inside dimensions from 2mm to 200 (metric set) and .08″ to 8″ (inch set).
Series 368
Mechanical Holtest Three-Point/Two-Point Internal Micrometers Complete Set
Features & Benefits
The Mitutoyo mechanical Holtest internal micrometer set includes complete gages (micrometer head units and measuring heads) for each size. Three hardened-steel anvils evenly spaced at 120° allow for true alignment of the axis bore for accurate, easily repeatable measurements. The holtest’s ratchet stop mechanism provides a constant measuring force on the hardened-steel spindle to ensure accurate, even measurements.
- Available in Metric and Inch sets
- Optional extension rod allows for measuring deep holes
- Scale on thimble and sleeve is laser etched for easier reading in all conditions
- Holtests up to 100mm / 4″ diameter measurements supplied in a fitted plastic case
- Holtests over 100mm / 4″ diameter measurements supplied in a wooden case
SERIES 368 Technical Data
| Technology: | Mechanical |
|---|---|
| Ratchet/Thimble: | Ratchet Stop |
Product List
| Order No.: | Product Image: | Contact Point: | Measuring Method: | Units: | Range: | Graduation: | Accuracy: | Setting rings included: | Set/s: | Individual Range: | Mass: | Remarks: | Extension Rod (Optional): | Accessories: |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 368-271 | - | TiN coating | Three-point method | Inch | 2.5-3" | 0.0002" | ±0.0002" | - | - | - | 450g | - | 952623 | Accessories |
| 368-272 | - | TiN coating | Three-point method | Inch | 3-3.5" | 0.0002" | ±0.0002" | - | - | - | 490g | - | 952623 | Accessories |
| 368-273 | - | TiN coating | Three-point method | Inch | 3.5-4" | 0.0002" | ±0.0002" | - | - | - | 500g | - | 952623 | Accessories |
| 368-274 | - | TiN coating | Three-point method | Inch | 4-5" | 0.0002" | ±0.00025" | - | - | - | 1050g | - | 952623 | Accessories |
| 368-275 | - | TiN coating | Three-point method | Inch | 5-6" | 0.0002" | ±0.00025" | - | - | - | 1120g | - | 952623 | Accessories |
| 368-276 | - | TiN coating | Three-point method | Inch | 6-7" | 0.0002" | ±0.00025" | - | - | - | 1190g | - | 952623 | Accessories |
| 368-277 | - | TiN coating | Three-point method | Inch | 7-8" | 0.0002" | ±0.00025" | - | - | - | 1260g | - | 952623 | Accessories |
| 368-278 | - | TiN coating | Three-point method | Inch | 8-9" | 0.0002" | ±0.0003" | - | - | - | 1420g | - | 952623 | Accessories |
| 368-279 | - | TiN coating | Three-point method | Inch | 9-10" | 0.0002" | ±0.0003" | - | - | - | 1580g | - | 952623 | Accessories |
| 368-280 | - | TiN coating | Three-point method | Inch | 10-11" | 0.0002" | ±0.0003" | - | - | - | 1600g | - | 952623 | Accessories |
| 368-281 | - | TiN coating | Three-point method | Inch | 11-12" | 0.0002" | ±0.0003" | - | - | - | 1690g | - | 952623 | Accessories |
| 368-906 |  |
Carbide | Two-Point method | Metric | 2 - 3mm | 0.001mm | ±2µm | 2.5 | - | 2-2.5, 2.5-3mm | - | - | - | - |
| 368-907 | - | Carbide | Two-Point method | Metric | 3 - 6mm | 0.001mm | ±2µm | 4, 5 | - | 3-4, 4-5, 5-6mm | - | - | - | - |
| 368-911 |  |
TiN coating | Three-point method | Metric | 6 - 12mm | 0.001mm | ±3µm | 8, 10 | - | 6-8, 8-10, 10, 12mm | - | with extension rod | - | - |
| 368-912 |  |
TiN coating | Three-point method | Metric | 12 - 20mm | 0.005mm | ±3µm | 16 | - | 12-16, 16-20mm | - | with extension rod | - | - |
| 368-913 |  |
TiN coating | Three-point method | Metric | 20 - 50mm | 0.005mm | ±3µm | 25, 40 | - | 20-25, 25-30, 30-40, 40-50mm | - | with extension rod | - | - |
| 368-914 |  |
TiN coating | Three-point method | Metric | 50 - 100mm | 0.005mm | ±3, 4µm | 63, 87 | - | 62-75, 75-88, 87-100, 50-65mm | - | with extension rod | - | - |
| 368-915 |  |
TiN coating | Three-point method | Metric | 100 - 200mm | 0.005mm | ±5µm | 125, 175 | - | 100-125, 125-150, 150-175, 175-200mm | - | with extension rod | - | - |
| 368-916 | - | TiN coating | Three-point method | Inch | .275-0.5" | 0.0001" | ±0.0001" | .35, .5 | - | .275-.35, .35-.425, .425-.5" | - | with extension rod | - | - |
| 368-917 |  |
TiN coating | Three-point method | Inch | 5-0.8" | 0.0002" | ±0.00015" | .65 | - | .5-.65, .65-.8" | - | with extension rod | - | - |
| 368-918 | - | TiN coating | Three-point method | Inch | 8-2" | 0.0002" | ±0.00015" | .1, 1.6 | - | .8-1, 1-1.2, 1.2-1.6, 1.6-2" | - | with extension rod | - | - |
| 368-919 | - | TiN coating | Three-point method | Inch | 2-4" | 0.0002" | ±0.00015, 0.0002" | 2.5, 3.5 | - | 2-2.5, 3-3.5, 3.5-4, 2.5-5" | - | with extension rod | - | - |
| 368-920 | - | TiN coating | Three-point method | Inch | 4-8" | 0.0002" | ±0.00025" | .5, 7 | - | 5-6, 6-7, 7-8, 3-5" | - | with extension rod | - | - |
| 368-926 |  |
Carbide | Two-Point method | Inch | .08-0.12" | 0.0001" | ±0.0001" | .1 | - | .08-.1, .1-.12" | - | - | - | - |
| 368-927 |  |
Carbide | Two-Point method | Inch | 12-0.28" | 0.0001" | ±0.0001" | .16, .24 | - | .12-.16, .16-.2, .2-.24, .24-.28" | - | - | - | - |