Proto Calibration Services
Industrial torque wrenches built for hard service — and calibrated for the records behind it.
ACS Calibration delivers NIST-traceable, audit-ready calibration for Proto instruments, available at the ACS central lab or directly on-site at facilities across the Southeast.
Popular Proto Equipment We Calibrate
The service pages below cover the categories Proto instruments most often fall into.
More brands we service: Snap-on, CDI, and Sturtevant Richmont — plus dozens more.
Proto Equipment, Calibrated With Data
Proto industrial torque wrenches and multipliers work heavy trades — energy, rail, plant maintenance — where fasteners are big, torques are high, and the consequences of under-torque are structural. Hard service accelerates drift, and high-torque work leans on our non-accredited, NIST-traceable coverage outside the current PJLA scope.
We calibrate Proto torque tools with an accredited certificate when the range is on our current PJLA scope, and non-accredited NIST-traceable calibration otherwise, with as-found and as-left data per tool — fleet batches aligned to one recall date.
ACS Calibration is an independent ISO/IEC 17025 accredited calibration laboratory. We are not affiliated with, sponsored by, or endorsed by Proto; brand names are used solely to identify equipment we service.
What You Get With Every Calibration
- NIST-traceable calibration certificate with real measurement data — not just a pass/fail sticker
- As-found and as-left readings, so drift is documented
- ISO/IEC 17025 accredited certificate with reported uncertainty — on request
- Calibration label with due date, plus a reminder before your next calibration is due
Why Companies Choose ACS for Proto Calibration
NIST-Traceable, Accredited on Request
Every calibration is NIST-traceable with real measurement data, and ISO/IEC 17025 accredited certificates are available on request for instruments on our accredited scope.
4–6 Business Day Typical Turnaround
Keep production moving. Most instruments are typically completed in 4 to 6 business days from arrival, with rush options available when a line is down.
Flexible Logistics
Mail your instruments in, or schedule onsite calibration and we come to your floor — serving Alabama, Florida, Georgia, Mississippi, Tennessee, South Carolina, and beyond.