Accud
Accud Outside Micrometer Set — 0–75mm, 3-Piece
Part No: AC-321-003-03 | Barcode: 9346967024996 | Series: Accud 321 Outside Micrometer Sets
The Accud AC-321-003-03 is a three-piece outside micrometer set covering 0–75mm in 25mm steps. Three individual mechanical micrometers (AC-321-001-01, 002-01, 003-01) in a fitted case with setting standards — the core precision-measurement kit for any new machine shop or apprentice tool kit.
3-Piece Set
0-25 / 25-50 / 50-75mm
0.01mm Graduation
±4µm Accuracy
Carbide Faces
Fitted Case
Set Contents
AC-321-001-01 (0-25mm)
AC-321-002-01 (25-50mm)
AC-321-003-01 (50-75mm)
Setting Standards
Fitted Carry Case
Key Features & Benefits
- Three mics covering 0–75mm — the everyday workshop outside-measurement range from M3 fasteners through to 75mm turned stock in one kit.
- Tungsten-carbide measuring faces — each mic’s anvil and spindle faces resist wear from repeated contact on hardened steel.
- 0.01mm graduation with ratchet stop — thimble reads to 10µm; the ratchet applies consistent measuring pressure so readings don’t vary with operator grip.
- Setting standards included — verify zero on each mic against the supplied reference standard before critical readings.
- Locking clamp on each mic — lock the spindle at a dimension for transfer to another caliper or part.
- Fitted carry case — protects the three mics and their setting standards; keeps the kit organised in the tool cabinet.
When to Use the AC-321-003-03 Set
This set is the essential starter kit for a new machinist, apprentice tool chest or QC bench — three mics covering the everyday measurement range in one purchase at significantly lower cost than three individual mics. For specialised needs step up to the AC-313 IP65 digital mic for coolant environments, the AC-352 inside mic set for bores, or the AC-391 depth mic for hole/shoulder depths.
Pro Tip: Calibrate each mic in the set against its supplied setting standard when you first unbox, then again every six months or after any drop — a mic with a 0.01mm calibration offset reads consistently wrong, and the offset is invisible without a reference check. Logging the date of each calibration in a small notebook in the case tracks drift over the kit’s life.
Product Specifications
| Part No. | Type | Range | Resolution | Accuracy | Barcode |
|---|---|---|---|---|---|
| AC-313-001-02 | IP65 Digital | 0-25mm | 0.001mm | ±2µm | 9346967028970 |
| AC-321-001-01 | Mechanical Outside | 0-25mm | 0.01mm | ±4µm | 9346967024965 |
| AC-321-002-01 | Mechanical Outside | 25-50mm | 0.01mm | ±4µm | 9346967024972 |
| AC-321-003-01 | Mechanical Outside | 50-75mm | 0.01mm | ±4µm | 9346967024989 |
| AC-321-003-03 ★ | Outside Mic SET (3pc) | 0-75mm | 0.01mm | ±4µm | 9346967024996 |
| AC-352-024-01 | Tubular Inside Set | 50-600mm | 0.01mm | (3+n+L/50)µm | 9346967024934 |
| AC-391-006-01 | Depth | 0-150mm | 0.01mm | ±3µm | 9346967024958 |
★ You are viewing the highlighted variant. Other variants in this series are also available.
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