The CM Messgerät Classic, manufactured by Trotec, is a moisture meter that is available in sets of instruments. The CM basic set includes a precision spring balance of up to 100g, a weighing breakers and a full tool kit for sample conditioning. The spring balance offers a maximum error of 0.3% and a 20 g calibration weight for checking the balance. It also has a ball set with four steel balls, twenty carbide ampoules and three test ampoules with 1.00g water. The test ampules are used to check leaks in the cylinder. Lastly, the set also includes three spare seals and an instruction booklet. All instruments are enclosed in a metal carrying case.