Watchmaker's loupe
A watchmaker's loupe , also called an ocular by watchmakers , is a magnifying glass which, due to its design, can be clamped in the cavity of an eye with muscle power in order to keep the hands free for work. The distance between the magnifying glass and the eye is kept constant, the object to be viewed is “focused” by moving it towards or away. It enables you to work on and control very small parts (e.g. watches or pieces of jewelry).
Watchmaker's loupes are made in different magnifications, from different materials and different lens systems. Since watchmaker's loupes are often used to work on an object, the magnification should not be higher than necessary. The working distance, i.e. the space between the magnifying glass and the object, decreases with the magnification.
There are head and glasses mounts for watchmaker's loupes to relieve the facial muscles.
Individual evidence
- ↑ Fritz von Osterhausen: Callweys lexicon . Munich 1999, ISBN 3-7667-1353-1 ; P. 196
- ↑ Lukas Stolberg: Lexikon der Taschenuhr, Carinthia Verlag, Klagenfurt 1995, ISBN 3-85378-423-2 , p. 238.