The INSIZE 2321‑75 Internal Dial Caliper Gage is designed for precise internal measurements such as bore diameters, recesses, and slot widths in components where external calipers cannot reach. It covers a range of 55 mm to 75 mm, with a fine graduation of 0.01 mm and an accuracy tolerance of ±0.04 mm.
The gage is built with a leg length (L) of 90 mm, leg width (A) of 8 mm, and contact tip diameter (D) of approximately 3 mm. It features a high‑visibility dial that can be rotated by 170° for convenient reading in various orientations. Additional functions may include setting tolerance limits (Go / No-Go), data preset, maximum/minimum memory, data hold, unit conversion (inch/metric), absolute/incremental reading, and optional data output interface.
This tool is ideal for tool rooms, inspection labs, and precision manufacturing settings where reliable internal dimensional measurement is crucial.
Key Features:
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Measures internal dimensions from 55 to 75 mm
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Graduation: 0.01 mm
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Accuracy: ±0.04 mm
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Leg length: 90 mm
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Leg width: 8 mm
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Contact tip diameter: ~3 mm
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Rotatable dial (170°) for easy reading
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Functions: tolerance display, preset, max/min, hold, unit conversion, absolute/incremental
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Optional data output
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Mechanical / dial type (no battery needed for the dial itself)
Specifications Table:
| Specification |
Value |
| Measuring Range |
55 – 75 mm |
| Graduation / Scale |
0.01 mm |
| Accuracy |
±0.04 mm |
| Leg Length (L) |
90 mm |
| Leg Width (A) |
8 mm |
| Contact Tip Diameter (D) |
~3 mm |
| Dial Rotation |
170° |
| Functions |
Tolerance, hold, preset, conversion, etc. |
| Data Output |
Optional |
