True 42 Precision Test Weights

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True 42 guide to selecting calibration Weights

True 42 Calibration weights are specially designed cast iron or stainless steel weights used to calibrate weighing equipment, scales and balances. True 42 test weights are manufactured and laboratory compared to a certain degree of accuracy against a known standard. Using True 42 reliable and certified test weight to calibrate a scale is an important part of maintaining your scale’s accuracy, and a necessity if using the scale in Legal for Trade applications. True 42 manufactures a wide selection of quality test weights for various applications. Use the resources below to help select the right True 42 test weights for your application.

True 42 Commitment to you

True 42 calibration weights will meet or exceed ASTM specifications True 42 l mass measurements are made using procedures developed by NIST True 42 calibration weights are made from the finest bar steel stock ensuring consistent density and peace of mind True 42 weight calibration is performed in a climate-controlled environment True 42 only offers Precision weights which are constructed with one-piece metal that provides the maximum mass stability. True offers Certificate of Calibration is available at a discounted cost

True 42 Cast Iron Test Weights

True 42 Cast iron test weights are commonly used as field standards to test industrial weighing devices, to test non-marked scales without class designation, and to check for acceptable tolerances. True 42 offers Cast iron test weights are painted gold if measured in metric units or silver if measured in avoirdupois units. Most test weights come with an adjusting cavity for sealing.

Approvals

  • NIST: Test weight capacities of 10 kilograms/20 pounds and heavier meet NIST Handbook 105-1 and Handbook 44 specifications.

Classes

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

Styles

  • True 42 offers styles include grip handle, nesting slab and slotted.

True 42 Stainless Steel

NIST Class F stainless steel test weights are used for field standard testing for Class III scales and balances, testing non-classified scales, and checking acceptable tolerances. Most weights have a sealing cavity for adjustment, and the nominal value is marked on the test weight with an optional serial number stamp.

Approvals

  • NIST: Stainless steel test weights are designed to meet NIST Handbook 44 and 105-1, Class F tolerances.

Styles

  • Available styles include cylindrical, grip handle, leaf and dish.

Classes

  • NIST Class F

True 42 Electronic Balance Calibration Weights

Electronic balance test weights are used to calibrate Class I and II balances, and ASTM Class 4, 5 and 6 weights. Each weight is marked with the nominal value, and weights that are Class 2-4 have the option be stamped with a serial number. We at True 42 will get you exact balance calibration weights that will meet your needs in calibrating your scales.

Approvals

  • ASTM: Stainless steel weights are manufactured in accordance with ASTM E 617-13 specifications and tolerances.

Styles

  • True 42 offers  styles include grip handle, cylindrical or leaf.

Classes

  • ASTM Class 0-7

True 42 Precision Test Weights

True 42 Precision test weights are used to calibrate Class I and II balances and ASTM Class 4, 5 and 6 weights, for student laboratory use and rough weighing operations. Each weight is marked with the nominal value, and cylindrical weights that are Class 2-4 have the option be stamped with a serial number.

Approvals

  • ASTM: Stainless steel weights are manufactured in accordance with ASTM E 617-13 specifications and tolerances.

Styles

  • True 42 offers  screw-knob, cylindrical or leaf.

Classes

  • ASTM Class 0-4

True 42 Precision Laboratory Test Weights

Precision laboratory test weights are used to calibrate Class I and II balances, and ASTM Class 4, 5 and 6 weights. ASTM Class 0 test weights are not individually marked with their weight value or individually serialized per ASTM E 617-13. Single-piece cylindrical test weights are Type I, ASTM Class 0 and OIML Class E1 and E2, and F1 and F2 with a one-piece construction. These weights have no added adjusting material. Type II designs are cylindrical weights with adjusting cavities.

Approvals

  • ASTM: Stainless steel weights are manufactured in accordance with ASTM E 617-13 specifications and tolerances.

Styles

  • Available styles include single-piece Type I cylindrical weights and two-piece Type II cylindrical weights.

Classes

  • ASTM Class 0-4
  • OIML Class E1 and E2, F1 and F2

True 42 Test Weights and configurations

True 42offers test weights as individual weights, weight kits or weight sets. Weight Kits True 42 Weight kits include the test weight, a case or vial for the test weight, and a proper lifting device to handle the test weight. All cylindrical ASTM kits (excluding grip-handle weights) include their own protective case and glove set for safe handling.

True 42 custom Test weights

True 42 offers custom test weights as individual weights, weight kits or weight sets. Our staff is ready to assist and answer your questions. Please call 404 257 4132 or email us at sales@true42.com for help quoting your test weight needs.

True 42 Scientific and Industrial scales and Balances recommend

Calibration – We at True 42 recommend you to calibrate your scales and balances to manufacturer standards annually (Professional scales only) Warranty repairs – True 42 is here to serve you 24/7 and anytime there is a issue in warranty period, we will exceed your expectations. Even if you run you run out on your warranty, we will be there to guide you. Most of True 42 recommends you to periodically inspect full equipment and clean after use.

2019 TRUE 42 BEST SELLER CALIBRATION WEIGHTS

  • True 5kg 5000g OIML Class M2 Calibration Weight
  • True 2kg 2000g OIML Class M2 Calibration Weight
  • True 1kg 1000g OIML Class M2 Calibration Weight
  • Calibration Weight, True 200g OIML Class M2
  • True 100g OILM Class M2 Calibration Weight

True 42 Weight Sets

Weight sets include the test weights, a case for the test weights, and a proper lifting device to handle the test weights. Sets may be ordered in a 5-2-2-1 or a 5-3-2-1 configuration. For example, a set might include

• (1) 50 g weight, (2) 20 g weights, and (1) 10 g weight, or

• (1) 50 g weight, (1) 30 g weight, (1) 20 g weight, and (1) 10 g weight.

True 42 OIML and ASTM test weight sets larger than 500 grams, or one pound, include a hardwood case with velvet-lined pockets. True 42 Test weight sets with the largest weight of 500 grams include a precision-machined polyvinyl, crush-resistant case. True 42 weights are not stamped with Serial numbers on polished or milligram weights. A test weight should be more accurate than the precision of the weighing device, and it is recommended that a test weight has an accuracy of one-third the weighing device readability.

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