The apparatus for medico-mechanical gymnastics, and their use / by Gustaf Zander.

  • Zander, Gustaf, 1835-1920.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: The apparatus for medico-mechanical gymnastics, and their use / by Gustaf Zander. Source: Wellcome Collection.

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    paratus so constructed are naturally a little more ex- pensive, wliile at the same time it is uncertain whether a more convenient measurement can be effected with it. Cross-cut-measuring apparatus. With this apparatus which is constructed after the same design as a hatmakers mechanical head- measure it is easy to obtain transverse (cross-cut) sectional diagrams of the trunk. Its mechanism con- sists of 32 movable small steel-bars which are arranged like radii round 4 different centres, so that their inward points furnished with wooden buttons when they are equally drawn back, form an oval ring which approxi- mately corresponds with the transverse section of the thorax. By means of small lead-weights these measur- ing-bars are pushed forward towards their respective (•entres and with their wooden-buttons touch the body which is in the central opening of the apparatus; they give the exact outline of the transverse sectional plane of the thorax at the desired height. At a distance of I2,b centimeters from the wooden buttons there is on each bar, a small steel-point which is turned upwards. If papers are placed between the iron-plates of the ap- paratus and pressed against the steel-points we ob- tain on the papers a larger copy of the ring formed by the wooden-buttons. The papers are taken out, placed on a pa.ste-board, on which the direction-lines of the mea.suring-bars are marked and the holes of the steel-points are projected on another piece of paper (best on a transparent parchment paper so that the direction-lines shine through). When the points thus projected are united by lines, a diagram is obtained which gives the transverse .sectional outline in natural size. The mpasuring-board is divided into two halves which are drawn apart while the patient places him-