Calibration Weights:
Single Calibration Weights & Weight Sets

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We carry a wide variety of calibration weights and calibration weight sets in several classes. Use these calibration weights to calibrate an inaccurate scale, or just to make sure your scale is “right on the money”. We have a good range of masses in weight tolerance classes OIML E2, OIML F1, OIML M2, and ASTM classes 0, 1, 2, 3, 4 and 6.

If you're here for just a single weight, narrow your results by choosing the single calibration weight subcategory below. If ya need more than one weight, ya might save some money by choosing a set of calibration weights. They have their own subcategory, too.

Subcategories

Products 1-48 of 145
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(6)
M2 Calibration Weight - 1 gram
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MSRP: $4.99
Old Will's Price: $3.50
MSRP: $4.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $4.99
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OIML Class M2 Calibration Weight.
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M2 Calibration Weight - 10 gram
S A L E
MSRP: $4.99
Old Will's Price: $3.50
MSRP: $4.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $4.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(22)
M2 Calibration Weight - 100 gram
S A L E
MSRP: $5.99
Old Will's Price: $3.50
MSRP: $5.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $5.99
Old Will's Price:
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Digital scales come factory calibrated, but there's a chance they can fall out of calibration during shipping or after use. Use this OIML Class M2 100g calibration weight to test and calibrate your digital scale, so ya know it's nice and accurate.

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(1)
M2 Calibration Weight - 20 gram
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MSRP: $5.99
Old Will's Price: $3.50
MSRP: $5.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $5.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(2)
M2 Calibration Weight - 5 gram
S A L E
MSRP: $4.99
Old Will's Price: $3.50
MSRP: $4.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $4.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(5)
M2 Calibration Weight - 50 gram
S A L E
MSRP: $5.99
Old Will's Price: $3.50
MSRP: $5.99
Old Will's Price: $3.50
Sale Price: $3.50
MSRP: $5.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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M2 Calibration Weight - 150 gram
S A L E
MSRP: $8.99
Old Will's Price: $4.50
MSRP: $8.99
Old Will's Price: $4.50
Sale Price: $4.50
MSRP: $8.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(11)
M2 Calibration Weight - 200 gram
S A L E
MSRP: $11.99
Old Will's Price: $6.50
MSRP: $11.99
Old Will's Price: $6.50
Sale Price: $6.50
MSRP: $11.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(5)
M2 Calibration Weight - 300 gram
S A L E
MSRP: $13.99
Old Will's Price: $8.50
MSRP: $13.99
Old Will's Price: $8.50
Sale Price: $8.50
MSRP: $13.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(9)
M2 Calibration Weight - 500 gram
S A L E
MSRP: $21.99
Old Will's Price: $12.50
MSRP: $21.99
Old Will's Price: $12.50
Sale Price: $12.50
MSRP: $21.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(5)
M2 Calibration Weight - 1000 gram
S A L E
MSRP: $27.99
Old Will's Price: $15.90
MSRP: $27.99
Old Will's Price: $15.90
Sale Price: $15.90
MSRP: $27.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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(4)
17 Piece - Class M2 - Calibration Weight Set
S A L E
MSRP: $28.99
Old Will's Price: $16.50
MSRP: $28.99
Old Will's Price: $16.50
Sale Price: $16.50
MSRP: $28.99
Old Will's Price:
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Weights included: 100g, 50g, 20g( x2 ), 10g, 5g, 2g( x2 ), 1g, 500mg, 200mg( x2 ), 100mg, 50mg, 20mg( x2 ), 10mg

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(3)
M2 Calibration Weight - 2000 gram
S A L E
MSRP: $35.99
Old Will's Price: $22.50
MSRP: $35.99
Old Will's Price: $22.50
Sale Price: $22.50
MSRP: $35.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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Ohaus 500 Gram ASTM 6 Slotted Weight 80850148,slotted
S A L E
MSRP: $43.00
Old Will's Price: $41.90
MSRP: $43.00
Old Will's Price: $41.90
Sale Price: $41.90
MSRP: $43.00
Old Will's Price:
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Ohaus 500 Gram ASTM 6 Slotted Weight

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M2 Calibration Weight - 5000 gram
S A L E
MSRP: $85.99
Old Will's Price: $49.40
MSRP: $85.99
Old Will's Price: $49.40
Sale Price: $49.40
MSRP: $85.99
Old Will's Price:
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OIML Class M2 Calibration Weight.
(item received may differ from image)

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3 Piece - Class M2 Calibration Weight Set - (1kg - 2kg) class m2 weight set,1kg weight,2kg weight,5kg weight
S A L E
MSRP: $99.99
Old Will's Price: $56.60
MSRP: $99.99
Old Will's Price: $60.90
Sale Price: $56.60
MSRP: $99.99
Old Will's Price:
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Class M2 three piece weight set for calibrating and testing digital scales. Includes one 1 kilogram weight and two 2 kilograms weights totaling 5 kilograms of weight.

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(1)
ASTM Class 2 Calibration Weight - 100 gram
S A L E
MSRP: $65.00
Old Will's Price: $63.38
MSRP: $65.00
Old Will's Price: $63.38
Sale Price: $63.38
MSRP: $65.00
Old Will's Price:
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Digital scales come factory calibrated, but there's a chance they can fall out of calibration during shipping or after use. Use this ASTM Class 2 100g calibration weight to test and calibrate your digital scale, so ya know it's nice and accurate.

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ASTM Class 3 Calibration Weight - 200 gram
S A L E
MSRP: $65.00
Old Will's Price: $63.38
MSRP: $65.00
Old Will's Price: $63.38
Sale Price: $63.38
MSRP: $65.00
Old Will's Price:
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Digital scales come factory calibrated, but there's a chance they can fall out of calibration during shipping or after use. Use this ASTM Class 3 200g calibration weight to test and calibrate your digital scale, so ya know it's nice and accurate.

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ASTM Class 3 Calibration Weight - 50 gram
S A L E
MSRP: $50.00
Old Will's Price: $63.38
MSRP: $50.00
Old Will's Price: $63.38
Sale Price: $63.38
MSRP: $50.00
Old Will's Price:
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Digital scales come factory calibrated, but there's a chance they can fall out of calibration during shipping or after use. Use this ASTM Class 3 50g calibration weight to test and calibrate your digital scale, so ya know it's nice and accurate.

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F1 Calibration Weight - 1 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 10 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 100 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 2 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 20 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 200 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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(1)
F1 Calibration Weight - 5 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 50 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 500 milligram
S A L E
MSRP: $88.00
Old Will's Price: $85.80
MSRP: $88.00
Old Will's Price: $85.80
Sale Price: $85.80
MSRP: $88.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 1 Calibration Weight - 200 gram
S A L E
MSRP: $95.00
Old Will's Price: $92.62
MSRP: $95.00
Old Will's Price: $92.62
Sale Price: $92.62
MSRP: $95.00
Old Will's Price:
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Digital scales come factory calibrated, but there's a chance they can fall out of calibration during shipping or after use. Use this ASTM Class 1 200g calibration weight to test and calibrate your digital scale, so ya know it's nice and accurate.

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M2 Calibration Weight - 10,000 Gram
S A L E
MSRP: $160.99
Old Will's Price: $98.80
MSRP: $160.99
Old Will's Price: $98.80
Sale Price: $98.80
MSRP: $160.99
Old Will's Price:
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OIML Class M2 10 kilogram Calibration Weight.
(item received may differ from image)

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F1 Calibration Weight - 1 gram
S A L E
MSRP: $110.00
Old Will's Price: $107.25
MSRP: $110.00
Old Will's Price: $107.25
Sale Price: $107.25
MSRP: $110.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 2 gram
S A L E
MSRP: $110.00
Old Will's Price: $107.25
MSRP: $110.00
Old Will's Price: $107.25
Sale Price: $107.25
MSRP: $110.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 5 gram
S A L E
MSRP: $110.00
Old Will's Price: $107.25
MSRP: $110.00
Old Will's Price: $107.25
Sale Price: $107.25
MSRP: $110.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 1 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 10 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 100 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 2 milligram
S A L E
MSRP: $113.00
Old Will's Price: $36.00
MSRP: $113.00
Old Will's Price: $36.00
Sale Price: $36.00
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 20 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 200 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 5 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 50 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 4 Calibration Weight - 500 milligram
S A L E
MSRP: $113.00
Old Will's Price: $110.18
MSRP: $113.00
Old Will's Price: $110.18
Sale Price: $110.18
MSRP: $113.00
Old Will's Price:
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ASTM Class 4 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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ASTM Class 6 Calibration Weight Set - (50g - 1g)
S A L E
MSRP: $124.00
Old Will's Price: $120.90
MSRP: $124.00
Old Will's Price: $120.90
Sale Price: $120.90
MSRP: $124.00
Old Will's Price:
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ASTM Class 6 - 8 Piece Calibration Weight Set. (item received may differ from image)

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F1 Calibration Weight - 10 gram
S A L E
MSRP: $124.00
Old Will's Price: $120.90
MSRP: $124.00
Old Will's Price: $120.90
Sale Price: $120.90
MSRP: $124.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 20 gram
S A L E
MSRP: $124.00
Old Will's Price: $120.90
MSRP: $124.00
Old Will's Price: $120.90
Sale Price: $120.90
MSRP: $124.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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F1 Calibration Weight - 50 gram
S A L E
MSRP: $124.00
Old Will's Price: $120.90
MSRP: $124.00
Old Will's Price: $120.90
Sale Price: $120.90
MSRP: $124.00
Old Will's Price:
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OIML Class F1 ISO Compliant Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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E2 Calibration Weight - 1 milligram
S A L E
MSRP: $125.00
Old Will's Price: $121.88
MSRP: $125.00
Old Will's Price: $121.88
Sale Price: $121.88
MSRP: $125.00
Old Will's Price:
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OIML Class E2 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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E2 Calibration Weight - 10 milligram
S A L E
MSRP: $125.00
Old Will's Price: $121.88
MSRP: $125.00
Old Will's Price: $121.88
Sale Price: $121.88
MSRP: $125.00
Old Will's Price:
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OIML Class E2 Calibration Weight with or without NVLAP certificate.
(item received may differ from image)

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We know you have a choice when you buy scales online. Just know that when you buy digital scales from Old Will, it's always a "Worry Free Deal".