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Patterns of Mass

We have a wide range of masses such as:

Cast Iron, NIST, ASTM and OIML Classification

Grip-handle and the ability of the heavyweights of Class F, 7 and M1.
Single slotted interlocking weights and hangers counterweight

Stainless steel, NIST Classification
NIST Class F weights sets and individual cylindrical and leaves style.. 


Electronic calibration weights, ASTM classification

04.01 ASTM Class stainless steel individual weights and kits. Grip-style handle and electronic calibration available in metric and avoirdupois.

Precision Lab Weights, ASTM classification

ASTM Class 0-4 individual stainless steel weights, equipment and sets. Screwed handles, a cylindrical piece styles, and sheet available in metric and avoirdupois.

Precision Lab, OIML Classification

Individual OIML weights stainless steel, kits and assemblies for class E1, E2, F1, F2, M1 and M2.



About us


MOLINSTEC is a national company with a continual presence in the Chilean market during the last 30 years. From our offices located in Antofagasta, Concepción, Santiago and Puerto Montt. We have been part in the implementation and development of several weighting projects, automation and control in the whole country.