Checking Gauges
Attribute gauges for shop-floor checking, built to 10% of the part tolerance and certified.
Gauges that answer yes or no on the shop floor in a few seconds, so the operator checks every part instead of waiting for inspection. Each gauge is certified on the CMM with the report attached.
How we make it: Custom CNC parts service →
3–5 weeks
1 piece
ISO 9001:2015 · AS9100D
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gauge tolerance | 10% of part tolerance | rule |
| Wear face hardness | 58–62 | HRC |
| Wear allowance | 5% of part tolerance | built in |
| Certification | CMM report per gauge | included |
| Marking | Tolerance + serial | etched |
| Recertification | Annual, on request | - |
Available Materials
- Tool steel A2 / D2 (wear faces)
- Aluminium 7075-T651 (bodies)
- Stainless 420
- Bronze (bushes)
Typical Applications
- Go / no-go pin gauges
- Depth gauges
- Slot width gauges
- Position locators
- Thread gauges
Surface Finishes
- Hardened 58–62 HRC
- Ground wear faces
- Anodised bodies
- Laser marked ID and tolerance
- Rust preventive
Industries Served
- Aerospace
- Automotive & EV
- Medical
- Industrial Equipment
- Tooling & Mould Making
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Gauge tolerance at 10% of part tolerance rule is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Material
- The first material listed, Stainless Steel 420, rates 4/10 on our machinability scale at 235 HB (annealed) · to 50 HRC hardened. On this shop's scale a harder alloy means slower passes and more tool changes, and that is cycle time the quote has to carry.
- Order size
- Minimum order is 1 piece, so on a first order setup and programming are spread over very few parts and they are most of the price. Repeat orders at the same quantity are cheaper without anything on the drawing changing.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Rockwell hardness tester on the part, not only against the mill certificate
- First article inspection to AS9102, because this family carries an aerospace or automotive certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Why only 10% of the part tolerance?
- Because a gauge uses some of your production tolerance just to exist. Make it tighter and it costs more without making the parts better; make it looser and you ship bad parts as good.
- What is the wear allowance for?
- So the gauge can wear before it starts passing bad parts. Without it, the first thousand parts it checks are fine and the next thousand are borderline scrap.
Related part families
Inspection Fixtures & Gauges
CMM fixtures, check gauges and go/no-go tooling built from your CAD and certified dimensionally.
Drill Jigs & Bushings
Plate and box jigs with hardened bushings, locating holes to ±0.05 mm on the production floor.
Machine Tooling & Inserts
Form tools, bushings and production inserts, hardened and ground to hold size across a long run.