ISO/IEC 17025 ACCREDITED · SAN ANTONIO · SINCE 1989
Calibration Texas customers rely on Techmaster’s San Antonio laboratory for ISO/IEC 17025 accredited service. Our Texas calibration lab — formerly Rothe San Antonio Calibration — supports defense, aerospace, energy, cybersecurity, and medical engineers across the state. Moreover, we deliver same-day quotes and traceable documentation. As a result, your test gear stays accurate, traceable, and audit-ready.
- 5 daysstandard turnaround
- 1–2 daysexpedite available
- FREE pickupSan Antonio metro
- Since 1989five US locations

Calibration Texas services: Where is the San Antonio lab located?
Our Texas calibration laboratory operates from 4614 Sinclair Road, San Antonio, TX 78222. The site sits in the South Central Texas. From this hub, we serve the entire state and adjacent regions.
First, our local team handles same-day quotes and intake. Additionally, we coordinate pickup, transit, and on-site calibration. As a result, every customer in the area receives accredited service with full traceable documentation.
Texas calibration industries Techmaster serves
Texas is one of the most calibration-intensive states in its region. This is due to its broad mix of defense, aerospace, technology, life sciences, and energy sectors. As a result, the Texas calibration market is large and demanding. The grid below summarizes the sectors we support.
Joint Base San Antonio & DoD
Joint Base San Antonio (JBSA-Lackland, JBSA-Randolph, JBSA-Fort Sam Houston), 24th Air Force, AFCYBER, Air Force Personnel Center. Defense calibration to Z540.3 and DCMA traceability standards.
Defense primes & aerospace
Lockheed Martin (San Antonio), Boeing San Antonio, L3Harris, BAE Systems, ManTech, CACI, Pratt & Whitney. Maintenance and depot operations need ongoing ISO 17025 calibration support.
Cybersecurity & data centers
NSA Texas, Rackspace, USAA, SecureLogix, Digital Defense. San Antonio is “Cyber City USA” — server-room thermal monitoring, electrical safety analyzers, and EMI test gear all need ISO 17025 calibration.
Energy & oilfield services
Valero Energy, Tesoro, NuStar, CPS Energy, Halliburton, Schlumberger, Baker Hughes (Eagle Ford). Process pressure, flow, and chemical calibration support refinery and oilfield operations.
Manufacturing & automotive
Toyota Motor Manufacturing Texas, Caterpillar San Antonio, Boeing 787 maintenance. PCBA test, dynamometer, torque, and dimensional calibration on the production floor.
Medical & biomedical
San Antonio Military Medical Center (SAMMC), Methodist Healthcare, Baptist Health, University Health. Defibrillator analyzers, infusion-pump testers, and electrical safety analyzers serviced by our biomedical practice.
Pharma & life sciences
DPT Laboratories, Mission Pharmacal, Texas Biomedical Research Institute, UT Health San Antonio. GMP compliance requires regular thermodynamic, balance, and clean-room calibration.
Food & beverage
HEB headquarters & manufacturing, Frost Foods, San Antonio craft breweries (Alamo Beer, Freetail, Künstler). Brix, pH, and tank-level calibration keep food-safety traceability intact.
Aviation & airports
San Antonio International Airport, Stinson Municipal, Kelly Field. Avionics test sets, RF/microwave analyzers, and dimensional gauges calibrated to FAA traceability requirements.

Calibration Texas disciplines
Our San Antonio lab is part of the Techmaster ISO/IEC 17025 scope. Below are the calibration disciplines we offer Texas customers.
Free pickup and delivery for Texas calibration customers
Techmaster offers free local pickup and delivery across the San Antonio metro. For example, our route covers New Braunfels, Schertz, Cibolo, Universal City, Live Oak, Converse, Boerne, Castle Hills, Alamo Heights, and Joint Base San Antonio.
- CollectWe pick up at your facility
- CalibrateISO 17025 work at San Antonio
- ReturnSigned certificate, data, uncertainty
For customers outside the free-pickup zone, we ship nationwide. Additionally, we offer on-site calibration for high-volume customers. For instance, semiconductor cleanrooms, defense depots, hospital biomedical gear, and aerospace ground-support equipment often need on-site work.
Why choose Techmaster for calibration texas?
Techmaster Electronics has been calibrating electronic test equipment since 1989. We operate five accredited calibration laboratories across the United States: Vista (CA), Silicon Valley, Orlando, San Antonio, and Holly Springs (NC). In addition, we run a corporate office in Henderson, NV.
The San Antonio, TX calibration lab combines national depth with local presence. Our San Antonio team knows Texas industries. Furthermore, we deliver same-day quotes. Standard work turns in 5 business days; 1–2 day expedite is also available.
Three certificate levels
- TraceableCertificate only
- Z540.3Certificate + data report
- ISO/IEC 17025Certificate + data + uncertainty
All certificates live online in the Techmaster Portal. Therefore, your engineering and quality teams can pull cal status anytime.
Texas service coverage map
Request a Texas calibration quote
Texas customers can reach our team three ways: phone, email, or online quote.
Call +1-210-648-3133
Request a Quote
Mon–Sun, 9 AM–5 PM local time · 4614 Sinclair Road, San Antonio, TX 78222 · cs.sa@techmaster.us
