Dimensional Calibration
1-D and 2-D dimensional calibration, including 2-D non-contact vision, on our ANAB ISO/IEC 17025 scope at the Santa Clara lab, with gauge blocks and ring gages at San Antonio.
Accredited Scope of Calibration
Techmaster’s dimensional calibration scope encompasses precision length, angle, and geometric measurements essential for manufacturing quality control and inspection processes.
ISO/IEC 17025 Accredited — ANAB AC-1736
Techmaster Electronics is accredited by ANAB (ANSI National Accreditation Board) under ISO/IEC 17025:2017 for calibration services. The table shows what this discipline covers on that scope and at which laboratory. Measurement uncertainties for every range are in the published scope document.
| Parameter | On scope | Accredited at |
|---|---|---|
| 1-D and 2-D dimensional, including 2-D non-contact vision | see scope | Santa Clara |
| Surface plates | see scope | Santa Clara |
| Thread plug and thread ring gages | see scope | Santa Clara |
| Gauge blocks | to 12 in | San Antonio |
| Ring gages | to 6.4 in | San Antonio |
San Antonio's dimensional scope is limited to gauge blocks and ring gages.
Instruments We Calibrate
We calibrate a wide range of dimensional calibration instruments. Every calibration includes a detailed certificate with measurement data, traceability information, and as-found / as-left values.
Gauge Blocks
Micrometers (Outside, Inside, Depth)
Calipers & Height Gauges
Dial / Test Indicators
Pin & Plug Gauges
Thread Gauges & Ring Gauges
Optical Comparators
Coordinate Measuring Machines (CMM)
Dimensional instruments we calibrate most
Techmaster has completed 27,304 dimensional calibrations in the last ten years across 8,158 instrument lines.
| Instrument type | Units calibrated (10 years) |
|---|---|
| Digital Caliper | 1,887 |
| Micrometer | 1,171 |
| Caliper | 975 |
| Dial Indicator | 823 |
| Thread Plug Gauge | 592 |
| Surface Plate | 392 |
| Dial Caliper | 387 |
| Digital Protractor | 337 |
| Manufacturer | Units calibrated (10 years) |
|---|---|
| SPI | 968 |
| Alameda | 895 |
| Starrett | 860 |
| Balax | 776 |
| Fowler | 621 |
| Vtg | 543 |
What usually drifts
- Caliper jaws and micrometer anvils wear, which shows as flatness and parallelism error.
- Surface plates wear unevenly where most parts are measured, usually near the centre.
- Thread gages wear on the go member first, so a worn plug can pass parts that are out of tolerance.
Dimensional calibration services · Dimensional measurement equipment rental
Frequently asked questions
Which lab calibrates surface plates and thread gages?
Santa Clara. Surface plates, thread plug and ring gages, and 1-D and 2-D dimensional work including 2-D non-contact vision systems are on its ANAB scope.
Can the San Antonio lab calibrate gauge blocks?
Yes. Gauge blocks to 12 in and ring gages to 6.4 in are on the San Antonio lab's ANAB scope. Other dimensional work goes to Santa Clara.
How often should a micrometer be calibrated?
Many quality systems start at 12 months and shorten the interval for heavy use. Check zero and the condition of the anvils between calibrations, and adjust the interval from your as-found results.
Why Choose Techmaster
ISO/IEC 17025 Accredited
ANAB-accredited laboratory with documented measurement uncertainties and full NIST traceability for every calibration.
35+ Years of Expertise
Calibration engineers with decades of hands-on experience across military, aerospace, medical, and industrial applications.
On-Site & Lab Service
Flexible service options including in-lab calibration at 4 US locations and on-site calibration at your facility nationwide.
Ready to Schedule Dimensional Calibration?
Contact Techmaster for a free quote. Fast turnaround, competitive pricing, and an accredited certificate for every parameter on our ANAB scope.