Class M1 stainless steel calibration weights: French excellence at the service of metrological precision
ZWIEBEL's range of M1 class stainless steel calibration weights is part of a tradition of excellence and rigour at the service of professionals in metrology, quality control and demanding laboratories. Manufactured from high-density stainless steel (8000 ± 150 kg/m³), these weights comply with the OIML R111 recommendation and meet the requirements of accuracy class M1, used for the calibration or verification of class M2 weights, as well as for class III weighing instruments (medium accuracy).
The 1 g to 50 g models are designed as single-piece weights with no adjustment cavity, ensuring maximum mass stability and perfect structural integrity. From 100 g upwards, the weights are equipped with a sealed adjustment cavity, allowing precise adjustment during manufacture or recalibration. All weights are individually identified, ensuring full traceability within a quality system.
The fine machining and low surface roughness (Rz < 5 µm, Ra < 1 µm) limit the adhesion of particles or dust, which helps to maintain the accuracy of the weight over time. In addition, residual magnetisation is less than 250 µT, ensuring compatibility with the most sensitive measuring instruments.
This series of weights covers a wide range of nominal values, from 1 g to 10 kg, with dimensions, tolerated masses and finishes adapted to each level of use. Their French manufacture by ZWIEBEL guarantees a high level of quality, validated by extensive experience in the field of metrology.
The ZWIEBEL stainless steel M1 series is an essential reference for all professionals looking for a reliable, accurate and durable weighing solution that complies with international metrology standards. It is the ideal choice for calibrating scales, checking secondary weights or performing regular quality controls, with the guarantee of a product designed and manufactured in France to the highest standards.
