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Rapid Angle Measurement Device for Superpave Gyratory Compactor

Price $10,365.98
Minimum Purchase:
1 unit

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The Rapid Angle Measurement Device (RAM) quickly verifies and calibrates both internal and external angles on any Superpave Gyratory Compactor using 150mm molds. The Rapid Angle Measurement Device for Superpave Gyratory Compactor safely and efficiently measures the internal angle of gyration and takes only a few minutes to complete the measurements required by AASHTO T312.  Measurements are taken at room temperature, avoiding the handling of hot molds. The instrument is self-contained with push-button controls and an LED display. No computer interface is required, simply operate the compactor with the device inside the mold, remove it and read the result on the display. No asphalt mix is required and no test data is stored. A NIST traceable certified calibration tube is included with the RAM. Certification is valid for one year.


  • Optimal for safely and quickly measuring internal and external angles of gyration for Superpave Gyratory Compactors
  • Compliant with AASHTO T312 specifications
  • No handling of hot molds or asphalt mix required
  • Self-contained unit with simple push buttons on LED display

Included Items:

  • Rapid Angle Measurement (RAM) Device

Power  3V, Lithium coin-type batteries (3 required)

Display Built-in, Digital

Temperature Range    18ºC—40ºC

Dimensions     Case: 20.5 x 17.5 x 8.0in (520 x 444 x 203mm) W x D x H

Product Dimensions   5.9 x 4.9in (150 x 123.5mm) Dia. x H

Net Weight     35lb (16kg)

Meets Test Methods:


ASTM D 7229

ASTM D 6925

ASTM D 7115

Global Gilson HMA-621 Rapid Angle Measurement Device for Superpave Gyratory Compactor

Rapid Angle Measurement Device for Superpave Gyratory Compactor