Specifications include, but are not limited to: 2 (EA) MOISTURE DENSITY GAUGES WITH OPTIONS. MC3 Elite 12' x 2' or Equivalent Must include Standard Accessories & Non-Contact Auto-Depth Indicator or Equivalent Standard Accessories Include: Elite Operators Manual or Equivalent Poly Reference Standard Block or Equivalent Molded Shipping Case/Wheels or Equivalent Drill Rod, Stainless Steel Scraper Plate, Extraction Tool or Equivalent AC & DC Chargers or Equivalent 2-Year Limited Warranty or Equivalent Free 1 st Calibration or Equivalent Standards: ASTM D6938, D2950, D7013, D7759, C1040 and AASHTO T310 or Equivalent Density Measurement Range: 70 to 170 pcf (1 .120 to 2.73 gcc) or Equivalent Moisture Measurement Range: 0 to 40 pcf (0 to 0.64 gcc) or Equivalent Density Source: Cesium 137 or Equivalent Moisture Source: Americium 241: Beryllium or Equivalent Density Source Activity: Maximum (10 mCi) 370 Mbq or Equivalent Moisture Source Activity: Maximum (50mCi) 1.85 GBq or Equivalent Precision: BS one-minute test: ±0.50 pcf (0.008 gcc) (at 125 pcf) or Equivalent Transmission one-minute test: ± 0.25 pcf (0.004 gcc) (at 125 pcf) or Equivalent Moisture one-minute test: ±0.25 pcf (0.004 gcc) (at 10 pcf) or Equivalent Chemical Composition Error Backscatter: ±1.00 pcf (0.016 gcc) or Equivalent Transmission: ±0.50 pcf (0.008 gcc) or Equivalent Surface Roughness Error (0.05 in. 100% void) Backscatter: - 4.00 pcf (0.064 gcc) or Equivalent Transmission: -0.50 pcf (0.008 gcc) or Equivalent