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OIML M1 Knob-Style Test Weights – 1 g to 10 kg

Our premium OIML M1 knob-style test weights offer precision and flexibility for calibration and verification tasks. Select individual weights from 1 g, 2 g, 5 g, 10 g, 20 g, 50 g, up to 10 kg—ideal for replacing lost weights or expanding your calibration set. Each weight is finely machined stainless steel, marked with nominal mass, and manufactured to strict M1 tolerances.


Key Features

  • OIML M1 Accuracy: Meets international ± tolerance to ensure precise calibration
  • Ergonomic Knob Design: Easy handling and placement on balances
  • Rugged Stainless Steel: Durable fine-turned finish for long-term use
  • Flexible Selection: Individually available from 1 g through 10 kg
  • Calibration Ready: Ideal for verifying commercial and precision scales

Available Nominal Weights

Nominal Value Tolerance (±) Model
1 g 1.0 mg 347-01
2 g 1.2 mg 347-02
5 g 1.6 mg 347-03
10 g 2.0 mg 347-04
20 g 2.5 mg 347-05
50 g 3.0 mg 347-06
100 g 5.0 mg 347-07
200 g 10.0 mg 347-08
500 g 25.0 mg 347-09
1 kg 50.0 mg 347-11
2 kg 100.0 mg 347-12
5 kg 250.0 mg 347-13
10 kg 500.0 mg 347-14

Technical Data

  • Shape: Knob-style for secure grip
  • Material: Polished, fine-turned stainless steel
  • Standards: OIML M1 conformity
  • Individual Items: Sold without case—choose a suitable protective box

Usage and Application

  • Ideal for replacing lost weights or supplementing existing sets
  • Perfect for spot-checks and scale accuracy verification
  • Suitable for laboratory, industrial, and educational environments
Kern M1 Stainless Steel Individual Test Weights
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