Calculating machine
- Original object type: Image
- Title: Calculating machine
-
Description:
MADAS (Multiplication Automat Division Addition Subtraction) mechanical calculating machine. Painted brass with steel fittings and a black painted metal lid. Patented Dec. 16th 1913, made in Switzerland. Can add up to 9,999,999 and totals to 999,999,999,
- Date range: c.1920
- Keywords: Computing
![[img]](http://digital.library.leeds.ac.uk/1455/1.haslightboxThumbnailVersion/physics1%20040.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/2.haslightboxThumbnailVersion/lr_physics1%20040.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/3.haslightboxThumbnailVersion/lr_physics1%20041.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/4.haslightboxThumbnailVersion/physics1%20041.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/5.haslightboxThumbnailVersion/lr_physics1%20042.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/6.haslightboxThumbnailVersion/physics1%20042.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/7.haslightboxThumbnailVersion/lr_physics1%20043.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/8.haslightboxThumbnailVersion/physics1%20043.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/9.haslightboxThumbnailVersion/cp1_thumb_physics1%20038.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/10.haslightboxThumbnailVersion/lr_physics1%20038.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/11.haslightboxThumbnailVersion/physics1%20038.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/12.haslightboxThumbnailVersion/lr_physics1%20039.jpg)
![[img]](http://digital.library.leeds.ac.uk/1455/13.haslightboxThumbnailVersion/physics1%20039.jpg)
- Copyright Holders: Copyright University of Leeds, School of Physics and Astronomy
- Collection: Physics Historical Instruments
- Physical Identifier: Catalogue number : 1202
- URI: http://digital.library.leeds.ac.uk/id/eprint/1455