Stopwatch & Timer Calibration Services
The stopwatch in the tech’s pocket is a measurement instrument — audit it like one.
ACS Calibration delivers NIST-traceable, audit-ready stopwatch and timer calibration, available at the ACS central lab or directly on-site at facilities across the Southeast.
Speed, Time & Frequency Instruments We Calibrate
RPM, hertz, and seconds — from plant-floor tachometers to laboratory centrifuges.
Frequently serviced brands: Traceable (Control Company), Shimpo, Extech, Eppendorf, Thermo Fisher Scientific, and Micron — plus dozens more.
The Instrument Nobody Lists Until the Auditor Does
Stopwatches time the things procedures care about: reaction endpoints, flow checks, line clearances, athletic and clinical measurements. They’re also the instrument most likely to be missing from the calibration recall list — until an auditor traces a timed step back to an unverified watch and writes the finding that puts every timed record in question.
We calibrate stopwatches and handheld timers under our accredited time capability — verified against reference standards through 24 hours, with as-found and as-left data per unit — turning pocket hardware into documented instruments your quality system can lean on.
Send the drawer: mixed fleets of stopwatches, bench and wall timers, and count-up/count-down units batch to one due date. The centrifuge run timers and frequency counters in the same building are covered under the same scope section.
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 Stopwatch Calibration
NIST-Traceable, Accredited on Request
Every calibration is NIST-traceable with real measurement data.
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.