Calibration & Services

We are an authoized CPN/InstroTek service center offering true three block density, two block moisture calibrations. We also offer leak testing and gauge repair for CPN/InstroTeks, Humboldts, and Troxlers.

Complete service of your moisture, density gauge includes

Electronic and Mechanical inspection

Cleaning and lubrication

Leak Test (extra cost)

Battery inspection

Signal adjustment (if needed)

Shipping case inspection and cleaning

Three-block density, two-block moisture calibration

Fast friendly service


We get your gauge in and out fast so you can keep testing.

Typical turn around time is two working days for calibrations.

Competitive pricing with no hidden fees.

Parts extra.

Our calibration site meets and exceeds ASTM Standard Guide D 7013.

Independently NIST Certified.

Caltrans letter of Certification on file.