GB1 Height Calibration Tube

Part # AFGBA04 (included in a calibration kit)

Available Factory Direct

Email us for a quote


Pine provides the GB1 Height Calibration tube with a certificate of calibration for purchase alone or as part of the Calibration Kit for Pine’s GB1 Superpave Gyratory Compactor.  Pine also provides recalibration services.


Re-Certification Interval:

AASHTO R18 does not specify the re-certification interval for measurement standards.  Therefore, AASHTO follows the recommendation of the manufacturer, which is 24 months for Pine Height Tubes.


ISO 17025-Certified Calibration:

AASHTO R18-17 Section requires measurement standards, which includes Pine Height Tubes, calibrated on or after January 1, 2018 to be calibrated by a laboratory that is ISO 17025-certified to calibrate the Height Tube dimension.  You may purchase AASHTO R18 from the AASHTO Bookstore.


Does the ISO 17025 Requirement Affect Your Height Tube?

The ISO 17025 Requirement applies to Pine Height Tubes that meet ALL of the following requirements.

  1. The Height Tube calibration date is on or after January 1, 2018.
  2. You use the Height Tube to conduct an official calibration or standardization of your gyratory compactor.
  3. Your laboratory is AASHTO accredited or is seeking AASHTO accreditation.


Pine Re-Certification Services:

Pine is preparing to serve you with ISO 17025-certified and non-ISO 17025-certified calibrations.  Specify the type of calibration that you need when contacting us.


Pine Gyratory Compactor Calibration Services:

The service provided for your Pine Gyratory Compactor by Pine Field Service Technicians will comply with AASHTO R18-17 by using ISO 17025-certified calibration tools as required.