| Specification | Details |
|---|---|
| Brand | INSIZE |
| Model | 3280-75A |
| Product Type | Non-Rotating Spindle Universal Micrometer |
| Measuring Range | 50–75 mm |
| Graduation | 0.01 mm |
| Accuracy | 5 µm |
| Spindle Type | Non-Rotating Spindle |
| Thimble Type | Ratchet Stop |
| Measuring Tips | 7 Pairs Included |
| Tip Types | Flat, Spherical, Spline, Disk, Blade, Knife-Edge & Point |
| Dimension L | 92 mm |
The INSIZE 3280-75A Non-Rotating Spindle Universal Micrometer is a versatile precision mechanical measuring instrument designed for accurate measurement of external dimensions in machining, manufacturing, inspection, and quality-control applications. It provides a 50–75 mm measuring range, 0.01 mm graduation, and 5 µm accuracy. Its non-rotating spindle helps maintain stable contact with the workpiece during measurement, while the supplied 7 pairs of interchangeable anvil/spindle tips allow the micrometer to adapt to different measuring applications. The integrated ratchet stop helps provide consistent measuring force. The 3280 series meets DIN 863-3 requirements.
Key Features
1. 50–75mm Measuring Range
The 3280-75A offers a 50–75 mm measuring range, making it suitable for measuring shafts, cylindrical components, machined parts, and other compatible external dimensions.
2. Non-Rotating Spindle
The non-rotating spindle helps keep the spindle contact surface stable as the micrometer is operated. This makes the instrument useful for applications where controlled and consistent contact with the workpiece is important.
3. 7 Pairs of Interchangeable Measuring Tips
The 3280-75A is supplied with 7 pairs of anvil/spindle tips, including flat, spherical, spline, disk, blade, knife-edge, and point configurations. This allows one micrometer to be configured for different measurement requirements.
4. 0.01mm Graduation & 5µm Accuracy
The micrometer features a 0.01 mm graduation and 5 µm accuracy, providing detailed measurement capability for precision machining inspection, manufacturing, and dimensional quality control.
5. Ratchet Stop & DIN 863-3 Design
The integrated ratchet stop helps maintain consistent measuring force during operation. The 3280 series is designed to meet DIN 863-3, supporting its use as a precision mechanical measuring instrument.
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