Metrology Lab
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Metrology Lab

The Weights and Measures program operates a Metrology Laboratory located in Giddings.  All weights and measures calibrations are documented and traceable to International System of Units (SI) through the National Institute of Standards and Technology (N.I.S.T.). The Giddings Metrology Laboratory is recognized by NIST in Mass Echelon III and Volume Echelon Transfer II.

The State Metrology Lab (Giddings Metrology Lab) conducts mass and volumetric calibrations on field test standards used by Licensed Service Companies and Texas Department of Agriculture (TDA) Inspectors and other customers that utilize commercial weighing or measuring devices as described in Agriculture Code §13.113.  Due to the high demand for field standard calibrations, appointments for calibration must be done several weeks in advance, through submission of TDA form RMT-001 and the required accompanying documentation. 

• Lab Hours of Operation – 8:00 to 5:00, Monday through Friday
• Lab Address - Mailing - P.O. Box 1518, Giddings TX 78942
Shipping - 1258 CR 226, Giddings, Texas 78942
        • Lab Telephone – 979.542.3231;  Fax – 888.205.7741
• Lab Email –
• Calibrations by appointments only – See Form RMT-001 (Also see Resources column on the right) 
• For more info, see appointment requirements letters: Mass / Volume

The facility has a 3-ton overhead crane to load and unload large weights, manual and powered hoists, a forklift and a compact utility loader to move prover trailers, etc. 

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        • Policy Statement
Requirement for a weight cart maintenance log (Logs to accompany carts beginning December 1, 2017.)
Test Measures Repair Letter from Seraphin
Volume Letter Regarding Levels on Provers
• Calibration customer service alerts (Examples of problem notices to avoid): 
Mass  • Volume  

IMPORTANT INFORMATION FOR CUSTOMERS – click here for all the following:
• Possible effects  to scheduled appointment no-shows
• How much in advance to schedule appointments
• The importance of providing serial numbers
• Payment options
• Drop-off/unloading and pick-up/loading instructions
• Recommended conduct for customers while at the Lab
• Contributing factors to rejection of artifacts
• Rejected artifacts may be assessed fee charges if discovered after calibration process begins
• Acceptance of Gifts, Benefits, and Favors by Employees

• Licensing information & questions: Service Technician and Service Company