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ASTM Individual Calibration Weights
Individual Calibration Weights Adjusted to Meet or Exceed ASTM Class 1-4 Tolerances

Weight 1P ASTM 3mg CL4 Non-Accrd TR

Calibration Certificate Traceable Certificate
ASTM Class 4
Weight Value 3 mg
Item Number: 30391078
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Overview
ASTM Individual Calibration Weights
Applications
Use Class 1 as a primary reference to calibrate other mass standards and use for traceability between national mass standards and ASTM Class 2 weights and lower. Class 1 is appropriate for calibrating high-precision balances with readability as low as 0.1mg.
Construction
One-piece
Design Features
Knob style weights 50kg–1 g are cylindrical with knob. Cal-Pak 5kg weight is a grip handle weight. Cylindrical style weights 1kg–5k have groove. Cylindrical grip style weights 4kg–30kg have recessed grip. Cylindrical weights 10g–600g are straight cylinder.
Specifications
Calibration Certificate Traceable Certificate
ASTM Class 4
Weight Value 3 mg
Design Flat
Protective Case Included
Construction One-piece
Density at 20°C 2.70 g/cm3
Dimensions 0.09 in x 0.06 in x 0.14 in (0.23 cm x 0.152 cm x 0.34 cm) (LxHxW)
Dimensions in Case 2.5 in x 2 in (6.35 cm x 5.08 cm) (HxØ)
Weight Material Aluminum;3003-H14 Aluminum
Weight Tolerance 0.052 mg
Wgt Origin (USA) USA