| 摘要 |
The invention relates to a swivel arm for an operation microscope. Said swivel arm is mounted on a stand with vertical and horizontal supports and a suspension. Two approximately equal, two-armed setting levers (1, 2) are supported on said suspension. One of said setting levers acts as a holding lever (1), positioning the other setting lever, which acts as a working lever (2), approximately centrally and symmetrically to its extension so that swivel moments are transferred from one end of the working lever to the other 1: 1. The invention provides a means of keeping an operation microscope stable and free of play without using parallel supports. |
