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Calibration Instruments

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About Calibration Instruments

Calibration instruments are reference items used to check other instruments. Weights for balances follow OIML R111 accuracy classes; E1 and E2 are the most accurate and suit analytical balances, F1 and F2 suit precision balances, and M1 suits industrial scales. Choose a weight set whose range covers your balance capacity and a class finer than the accuracy you need to verify. Hook weights are used to load force gauges, spring balances and hanging scales.

Hardness test blocks are made for one method and scale, such as Rockwell HRC, Vickers HV or Brinell HBW. Select a block in the same scale, load and hardness range as your routine tests. Glass scales and torque sensors serve length and torque checks. Handle weights and blocks with gloves or tweezers, store them in their cases, and keep them clean and dry, since dirt and rust change mass and readings. For NABL-accredited work, ask whether a calibration certificate is supplied with the item before ordering.

We list INSIZE and other brands at prices that include GST, with a GST invoice on every order and delivery across India. Calibration labs, quality departments and testing centres buying several units can ask for a bulk quotation.

Questions buyers ask

Which calibration weight class do I need for my balance?

It depends on balance accuracy. Analytical balances usually need E2, precision balances F1 or F2, and industrial scales M1. Check your balance manual or SOP.

What are hardness test blocks used for?

They are used to check that a hardness tester reads correctly. Pick a block in the same scale and range as your tests.

Is a calibration certificate supplied?

Please ask before ordering, with the model number. Certificate details depend on the product.

Do prices include GST?

Yes. Prices include GST and every order gets a GST invoice.