Glossary

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Ability of being verified

A measuring device or instrument (scale, weight piece) can be verified if it is approved for verification, if it satisfies the applicable verification requirements or if its design is approved for verification by the competent authorities.

Accessory

Article intended specifically by its manufacturer to be used together with a device to enable the device to be used in the intended manner.

Accuracy

1. The property of the measurement value of a scale to correspond to the value of the load on the scale (accuracy classes of scales).
2. The property of the stated values of weight pieces to correspond to their true value (accuracy classes of weight pieces).

Accuracy class

Classification of various types of scales or weight pieces, into classes of the same accuracy.

Accuracy class (scales)

Separation of scales into different accuracy classes and assignment of different scale types to classes of identical accuracy: scale of special accuracy I , scale of high accuracy II , scale of medium accuracy III , and scale of ordinary accuracy IIII (acc. to international recommendation OIML R 76-1 and EC directives).

Actual scale interval

Value, expressed in units of weight of:
- the difference between the values corresponding to two consecutive scale marks, foranalogueindication; or
- the difference between two consecutive indicated values, for digital indication.

Additive tare device

A function allowing the weight of objects such as clothing or a container to be set to zero without altering the weighing range of the actual subject weight.

Adjust

Setting a measuring instrument (e.g. scale) so that the measured value is correct, or deviates as little as possible from the correct value, or the deviation remains within acceptable limits of error. See also adjustment (noun).

Adjustment

Setting a measuring instrument (e.g. scale) so that the measured value is correct, or deviates as little as possible from the correct value, or the deviation remains within the maximum permissible error range. See also adjust (verb).

Admission to verification

Requirements specified in the Weights and Measures Acts for the verification of measuring instruments. A type may either be generally approved, or approved after testing by the Notified Body.

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