The Moore & Wright 280 Series Inside Micrometers are precision instruments designed for accurate internal measurement of bores, slots, grooves and recesses in engineering, manufacturing and inspection applications. Available in both traditional mechanical and digital models, the range provides exceptional accuracy whilst allowing users to choose their preferred measuring method.
Manufactured to the renowned Moore & Wright standard, both versions feature precision ground measuring faces and smooth operating mechanisms to deliver reliable and repeatable internal measurements. The digital models include a clear LCD display with metric and imperial conversion, whilst the mechanical versions offer dependable manual measurement with clearly engraved graduations.
Suitable for machine shops, inspection departments and quality control laboratories, the 280 Series provides an excellent solution for measuring internal dimensions where high levels of precision are required.
Available Models
| Product Code |
Type |
Range (mm) |
Range (inch) |
Accuracy (mm) |
Resolution (mm) |
Resolution (inch) |
| MW280-01 |
Mechanical |
5-30 |
— |
±0.005 |
0.01 |
— |
| MW280-02 |
Mechanical |
25-50 |
— |
±0.005 |
0.01 |
— |
| MW280-03 |
Mechanical |
50-75 |
— |
±0.005 |
0.01 |
— |
| MW280-04 |
Mechanical |
75-100 |
— |
±0.005 |
0.01 |
— |
| MW280-06 |
Mechanical |
125-150 |
— |
±0.005 |
0.01 |
— |
| MW280-07 |
Mechanical |
150-175 |
— |
±0.005 |
0.01 |
— |
| MW280-01DDL |
Digital |
5-30 |
0.2-1.2" |
±0.003 |
0.001 |
0.00005" |
| MW280-02DDL |
Digital |
25-50 |
1-2" |
±0.003 |
0.001 |
0.00005" |
| MW280-03DDL |
Digital |
50-75 |
2-3" |
±0.003 |
0.001 |
0.00005" |
| MW280-04DDL |
Digital |
75-100 |
3-4" |
±0.004 |
0.001 |
0.00005" |
| MW280-05DDL |
Digital |
100-125 |
4-5" |
±0.005 |
0.001 |
0.00005" |
| MW280-05DDL |
Digital |
100-125 |
4-5" |
±0.005 |
0.001 |
0.00005" |
Technical Specifications
| Specification |
Details |
| Series |
280 |
| Product Types |
Mechanical & Digital Inside Micrometers |
| Measuring Range |
5-30mm to 100-125mm (0.2-1.2" to 4-5") |
| Mechanical Resolution |
0.01mm |
| Digital Resolution |
0.001mm / 0.00005" |
| Accuracy |
±0.003mm to ±0.005mm |
| Applications |
Internal Measurement of Bores, Slots, Recesses & Precision Components |
The Moore & Wright 280 Series Inside Micrometers combine traditional mechanical reliability with modern digital convenience, providing engineers and inspectors with a versatile range of precision internal measuring instruments. Whether measuring bores during machining or carrying out final inspection, the 280 Series delivers the accuracy and repeatability required for professional metrology applications.