| Specification | Details |
|---|---|
| Brand | INSIZE |
| Model | 3331-50A |
| Product Type | Micrometer With Dial Indicator |
| Measuring Range | 25–50mm |
| Micrometer Head Graduation | 0.01mm |
| Micrometer Head Accuracy | 4µm |
| Anvil Retracting Range | 8mm |
| Measuring Faces | Carbide |
| Indicator | Optional |
| Dial Indicator Graduation | 0.01mm |
The INSIZE 3331-50A Micrometer With Dial Indicator is a precision mechanical measuring instrument designed for accurate dimensional inspection, machining, and repetitive production measurement. It offers a 25–50mm measuring range, 0.01mm micrometer head graduation, and 4µm micrometer head accuracy. The micrometer features an 8mm anvil retracting range and carbide measuring faces for reliable repeated measurement. It is designed to work with compatible dial or digital indicators, which are optional accessories. The 3331-50A is suitable for CNC machining, quality control, tool-room operations, production inspection, and applications requiring repeatable dimensional checking.
Key Features
1. 25–50mm Measuring Range
The 3331-50A provides a 25–50mm measuring range, making it suitable for measuring external diameters, thicknesses, shafts, components, and precision-machined parts within this size range.
2. Fine 0.01mm Graduation
The micrometer head features 0.01mm graduation, allowing users to take clear and consistent mechanical measurements during machining, inspection, and manufacturing operations.
3. 4µm Micrometer Head Accuracy
INSIZE specifies 4µm micrometer head accuracy for the 3331-50A. This makes the instrument suitable for precision dimensional inspection and quality-control applications.
4. Compatible With Optional Indicators
The 3331-50A is designed to accept compatible dial or digital indicators. INSIZE lists optional dial indicators with 0.01mm graduation and digital indicators with 0.01mm / 0.0005" resolution. The indicator is not included as standard.
5. 8mm Anvil Retraction & Carbide Faces
The micrometer incorporates an 8mm anvil retracting range and carbide measuring faces, supporting repeated measurement and production inspection. The 3331 series is designed to meet DIN 863-3.
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