A measuring device (6) subjected to gravitational forces and including at least one laterally oscillating, pendulously suspended, support structure (7) for supporting at least one of a measuring element, and optical element, and a suspension element for suspending the support structure and including...http://www.google.se/patents/US6493952?utm_source=gb-gplus-sharePatent US6493952 - Measuring device subjected to gravitational forces and having a pendulous suspension
