Rice Lake Weighing Systems 21 oz. Calibration Weight, Hook Style, Class 7, No Certficate, Cast Iron

Use Rice Lake Weighing Systems® cast iron weights undergo a phosphatizing process in which the metal is thoroughly cleaned and mildly etched to allow finish adhesion. The weights are then coated with a layer of chip-resistant paint which conforms to NIST Handbook 105-1 standards. This 2-step process ensures a long-lasting finish that greatly reduces the possibility of corrosion.

• Counterpoise weights for ratio weighing
• Nominal value marked on weight
• Weight capacities of 10kg/20 lb. and up meet NIST Handbook 105-1 and Handbook 44 specifications
• Metric weights designated by gold paint
• Avoirdupois weights (lb.) designated by silver paint
• Serial numbers may be stamped on weights (optional)

Classes Available:

• NIST Class F
• ASTM Class 6 and 7
• OIML Class M1 and M2

Applications:

• Field standards for testing industrial devices Class III, Class IIlL or IIII
• Testing for nonmarked scales without Class designation
• Verifying scales are within specified accuracy and tolerances