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Balances/Scales

Ohaus* Mass Sets






Calibration weights for the continuous accuracy of your electronic balance are available from 1mg to 50kg.


  • Manufactured to international standards, i.e., ASTM and OIML, Ohaus loose masses and mass sets are available in a variety of styles for a wide range of uses.

  • In addition to the conventional shapes, Ohaus also offers hooked and slotted masses for use in physics.

    • Product Description


  • Calibration masses.

  • Individual or mass sets.

  • Hooked and slotted masses.

    • Individual Masses

  • ASTM Class 1 Masses; 5kg to 30kg.

  • ASTM Class 1 Precision Masses; 1mg to 200g.

  • ASTM Class 1 Precision Masses; 20g to 4kg.

  • ASTM Class 2 Precision Masses; 20g to 30kg.

  • ASTM Class 2 Masses; 5kg to 30kg.

  • ASTM Class 4 Precision Masses; 1mg to 100g.

  • ASTM Class 4 Precision Masses; 1mg to 2kg.

  • ASTM Class 6 Precision Masses; 1mg to 2000g.

  • ASTM Class F Masses; 5lb to 100lb / 2kg to 50kg.

  • ASTM Class F Hooked Masses; 1lb to 20lb / 1oz to 8oz / 100g to 5kg.

  • Metric Hooked Masses; from 10g to 1000g.

  • Newton Hooked Masses; from 0.1N to 10N.

  • Newton Slotted Masses; from 0.1N to 5N.

  • OIML Class E2 Masses; 1mg to 50kg.

  • OIML Class F1 Masses; 1mg to 50kg.

  • Precision Slotted Masses; from 1g to 500g.

    • Mass Sets

  • Mass Sets

  • ASTM Class 1 Precision Set; 500mg x 1mg to 200g x 1g.

  • ASTM Class 4 Precision Sets; 500mg x 1mg to 100g x 1mg.

  • ASTM Class 6 Precision Sets; 500mg x 1mg to 2000g to 1g.

  • Metric Hooked Sets; 1000g x 10g.

  • Newton Hooked Sets; 10N x 0.1.

  • Newton Slotted Sets; 5N x 0.1.

  • OIML Class E2 Sets; 1mg to 50kg.

  • OIML Class F1 Sets; 1mg to 50kg.

  • Precision Slotted Masses; 500g x 1g to 500g x 10g.





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