Eichzeichen

Eichzeichen is the official verification mark placed on certain measuring instruments to indicate that they have been tested and approved for use under legal metrology. The mark signifies that the instrument meets applicable accuracy requirements and is suitable for transactions or official measurements. It is part of a broader system of metrological control intended to ensure reliability and consumer protection.

The legal basis for Eichzeichen rests on national weight and measure laws and the regulations that govern conformity and verification of measuring devices. In many German-speaking countries, a national metrology authority conducts or authorizes periodic verifications of eligible instruments. After successful testing, the instrument is marked with the Eichzeichen and issued a verification certificate, sometimes referred to as an Eichschein, which documents the device’s status and validity period.

Appearance and issuance can vary by country and device type. The mark is typically affixed as a stamp, engraving, or sticker by the approving authority or a designated verification office, and it may include an identifying symbol of the issuing body and the year of verification. Some devices also carry an expiry date or other notes indicating the period for which the verification remains valid.

Scope and usage are focused on measuring instruments used in trade or where legal metrology applies, such as scales, taximeters, gas and water meters, and certain thermometers. Not all measuring devices require Eichzeichen; many rely on other forms of conformity assessment such as CE marking for EU-wide purposes, or internal calibration for non-commercial uses.

Data and validity: The Eichzeichen’ validity is limited to a defined period, after which re-verification is required. The exact interval depends on device type, use, and jurisdiction. Regional variations exist, and the concept is generally parallel in other German-speaking countries, though the precise mark design and procedures differ.