Circular plotting protractor patented by E.R. Zenthon in 1960

Made:: 1960-1970

Circular plotting protractor patented by E.R. Zenthon in 1960, aluminium, 2 ft inner diameter, with 8 aluminium scales and perspex centring sheet in fitted wooden box

Details

Category:: Mathematics

Object Number:: 1988-9

type:: drawing instruments and circular protractors

credit:: Gimpel, A.

Cite this page

Rights

We encourage the use and reuse of our collection data.

Data in the title, made, maker and details fields are released under Creative Commons Zero

Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence

Using our data

Download

Download catalogue entry as json

Download manifest IIIF

Our records are constantly being enhanced and improved, but please note that we cannot guarantee the accuracy of any information shown on this website.