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17 Piece - Class M2 - Calibration Weight Set

In Stock
Old Will's Price: $15.74

My Weigh Calibration Weight Set

Class M2 ~ 17 piece weight set

My Weigh calibration weight set
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"In A Nutshell"
Weight Pcs Tolerance
100 g 1 +/- 15 mg
50 g 1 +/- 10 mg
20 g 2 +/- 8 mg
10 g 1 +/- 6 mg
5 g 1 +/- 5 mg
2 g 2 +/- 4 mg
1 g 1 +/- 3 mg
500 mg 1 +/- 2.5 mg
200 mg 2 +/- 2 mg
100 mg 1 +/- 1.5 mg
50 mg 1 -
20 mg 2 -
10 mg 1 -
Product Details
  • Use these calibration weights alone, or combine them to accurately calibrate your digital weighing scale.

Customer Reviews: Back to top
Good price and great kit
Good price for this kit, works as expected.
Reviewed by: Tony from Cleveland on 10/12/2014
works for me
I just wanted a few small weights to set spring tension on the keys of a small pipe organ. 5 gram increments would have been OK. Got much more than I needed, but the price was right. My only complaint was that the 5g weight wasn't flat on the bottom, so I ground of a few mgs!
Reviewed by: David from Utah on 4/8/2013
Great product and an even better retailer.
I bought this set of weights to check the accuracy of my reloading scale. Unfortunately, the set came without the plastic cover for the wafer weights. Fortunately, after one call to Will Knott, a shiny new cover arrived at my door step in about 2 days, no charge. Unbelievably great customer service! The weights are good too.
Reviewed by: B. Bellas from New Boston, MI on 3/27/2013
17M2 piece calibration weight set
A good value for my needs. All weights within specifications except for the 2 mg (2 included) and 1 mg weights. The 2 mg weights came in at 2.015 and 2.025 grams. The 1 mg weight a dismal .830 grams. These were tested with an electronic powder reloading scale and a precise diamond-weighing (carat weights) balance scale.
Reviewed by: Bill Burchell from South Bend, IN on 2/25/2012
Questions and Answers: Back to top

Q: Does the weight set come with certificate of calibration?

Asked by:  (Submit an answer)

A: Hey there Robert,
No this weight set does not come with a certificate of calibration.

Answered by:   5 of 5 found this helpful. Did you?  

Q: Just want to check about tolerances: If I am combining weights for example to get 150 g and have the 100g +/- 15mg and the 50g +/- 10 mg my total error would be +/- |15+10| or +/- 25mg, right? or if I add up to 180g with the 100g, 50g, 20g, & 10g, the total error possible would be +/- |15 + 10 + 8 + 6| or +/- 39mg. Thanks.

Asked by:  (Submit an answer)

A: Hey there mb,

Yes that is correct. You have to take into account the tolerances of the weights themselves, and the tolerances of the scale being used. That doesn't mean the added weight value WILL be off by that much, but it helps to know just how far off the weight value COULD be.

Take care,

Answered by:   2 of 2 found this helpful. Did you?  
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