Calibration/Test Weights

If you own a weighing scale with external calibration, then without calibration weights you run the risk of having inaccurate data. Inscale offer a selection of calibration weight sets ranging from 1g to 50kg with stainless steel, cast iron or brass options available. When buying calibration weights, it’s important to buy from someone you can trust, as any irregularity will cause your scales to be invalid. Please also remember to keep your weights in good condition to ensure that they remain consistently accurate over time!

It can be confusing to know which calibration weight set is right for you, although they can be broken down into three separate groups as shown below:

  • M1 Class Test Weights: The M1 class weights are generally used when precision is not a top priority and we recommend using on a scale which has a readability of 0.1g and above. These are the most popular calibration weights for everyday use.
  • F1 Class Test Weights: These weights are usually found in laboratories and calibration houses and have a higher level of accuracy than the M1 despite being cheaper than the E1 and E2. They are used to calibrate balances that have a readability of 0.01-0.001g.
  • E1 & E2 Class Test Weights: Most commonly found in calibration centres for chemical and pharmaceutical companies, the E1 and E2 are the most precise calibration weights currently available. They calibrate balances with the finest level of accuracy which is anything below 0.0001g.
    • For any help in choosing your weights, please contact our team either by phone (01908 972 660) or live chat.

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  1. Kern M1 Class Calibration Test Weight Finely Turned Brass Wooden Box Sets

    M1 Class Calibration Test Weight Finely Turned Brass Wooden Box Sets

    Starting at £69.00 £82.80

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets. Learn More
  2. Kern M1 Class Individual Finely Turned Beam Bar Brass Calibration Test Weights

    M1 Class Individual Finely Turned Beam Bar Brass Calibration Test Weights

    Model Capacities:
    10g to 1000g

    Starting at £30.00 £36.00

    Kern's individual M1 Class tuned beam bar brass calibration weight. Hanging beam bar weights can be customised with slotted weights for calibrating scales, balances and force measurement gauges. Learn More
  3. Kern M1 Class Individual Stainless Steel Block Calibration Test Weights

    M1 Class Individual Stainless Steel Block Calibration Test Weights

    Model Capacities:
    5000g to 50kg

    Starting at £315.00 £378.00

    Individual M1 class stainless steel block calibration weight manufactured by Kern. Test weights are used to accurately calibrate scales and balances to ensure that they are both reliable and accurate. Learn More
  4. OIML Approved Calibration Weights | Inscale UK

    OIML Calibration Weights

    Model Capacities:
    1g to 5000g

    Starting at £10.00 £12.00

    Each OIML weight is an individual stainless steel weight that meet the requirements for testing to OIML standards. E2 weights offer the highest accuracy required for analytical and precision balances, M1 weights offer the lowest accuracy but are more affordable and are ideal for compact balances and bench scales. Learn More
  5. Kern F1 Class Milligram Calibration Test Weights

    F1 Class Milligram Calibration Test Weights

    Starting at £11.00 £13.20

    F1 milligram test weights with OIML compliance manufactured by Kern. Constructed from flat polygonal sheet in aluminium and German silver, these calibration weights are used to externally calibrate high-precision balances in milligram divisions. Learn More
  6. Kern F1 Class Calibration Test Weight Nickel-plated and polished Brass Wooden Box Sets

    F1 Class Calibration Test Weight Nickel-plated and polished Brass Wooden Box Sets

    Starting at £175.00 £210.00

    Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets. Learn More
  7. Kern M1 Class Individual Finely Turnrd Brass Calibration Test Weights

    M1 Class Individual Finely Turned Brass Calibration Test Weights

    Model Capacities:
    1g to 10kg

    Starting at £5.00 £6.00

    Kern's range of Individual finely turned brass calibration test weights for accurate scale and balance calibration. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets. Learn More
  8. Kern M1 Class Calibration Test Weight Finely Turned Stainless Steel Wooden Box Sets

    M1 Class Calibration Test Weight Finely Turned Stainless Steel Wooden Box Sets

    Starting at £69.00 £82.80

    M1 calibration weight box set manufactured by Kern. This boxed weight set holds a selection of turned stainless steel calibration weights for conducting full external calibration checks of scales and balances. M1 calibration weights are standard level calibration weights used for external calibration of compact, bench, industrial and retail weighing scales. Learn More
  9. Kern M1 Class Individual Finely Turned Hook Brass Calibration Test Weights

    M1 Class Individual Finely Turned Hook Brass Calibration Test Weights

    Model Capacities:
    1g to 10kg

    Starting at £12.00 £14.40

    Kern M1 Class Individual Finely Turned Hook Brass Calibration Test Weights. Correctly selected test weights with calibration certificate are the pre-requisite for ensuring that your balances and scales are not only correctly adjusted, but also correctly calibrated. Scheduled testing of your balances with such test weights helps to guarantee your quality requirements and to maintain your quality targets. Learn More
  10. Kern M1 Class Individual Cast Iron Block Calibration Test Weights

    M1 Class Individual Cast Iron Block Calibration Test Weights

    Model Capacities:
    5000g to 50kg

    Starting at £65.00 £78.00

    M1 Class cast iron block test weights manufactured by Kern. Block test weights are used for calibrating larger, industrial scales and weighing platforms with higher weight capacities. Perfect for large industrial platforms and warehouse weighing scales. Learn More
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