Description:
- Object ID: ALSA 2006.08.01
- Made by: Brunsviga Maschinenwerte A.G. Braunschwei
- Model: 13Z
- Serial Number: Unknown
- Date Made: circa 1934 to 1947
- Approximate size:
- Accessories: Included are Manual (in German), Large Manual (in German), Small Manual (in German), Waybill (in German).
- Condition: good
Commentary:
Brunsviga Calculator. Also included with it is a cover for the calculator and a manual (in German). The full name for this calculator is Brunsviga-Rechmaschine Doppel 13Z. Rechmaschine Doppel translated from German to English is “Double Calculator” meaning it can preform two calculations at the same time. The model number is 13Z which was made from 1934 to 1947. The number 13 refers to the number of digits that could be entered at the bottom of the calculator. The letter Z refers to “Zehner” which translated from German to English is “tens” which refers to tens in the revolutions counter. It was ideal for calculating coordinates. The trigonometric functions are put in at the bottom of the calculator – the sine of the bearing on one side and the cosine on the other. The large crank on the right side is used to put in the distance which concurrently multiplies both the sine and cosine functions giving the x and y coordinates.
Source of Object: Donated by Siegfried Osterwoldt.
Notes: Siegfried Osterwoldt bought it in 1954 from a lecturer at the Hamburg Institute of Technology who had bought it new in 1947. Siegfried paid 750 marks for it, which was about one and a half months salary at the time. He brought it with him when he immigrated to Canada in 1954 and used it in Canada for survey calculations.
References: Visit the article Too Cumbersome for the Field – Mechanical Calculators for additional information..
Description by: Updated by Ed Titanich, September 27, 2024.