Thompson's Pinhole Plotter

The Thompson Watts Plotting Machine. Designed by EH Thomspon & manufactured by Hilger & Watts Ltd. This and subsequent models are widely used for making maps from aerial photographs
The pinhole plotter was designed by EH Thompson at GHQ Middle East in 1941-2, and was used to make maps from aerial photos. A document in the collection file lists this as one of the two most important objects in the collection, along with a Marine Chronometer by Parker & Frodsham with was sold at auction proir to May 2000.

- Thompson, E.H., Thompson-Watts Plotting Machine
- Atkinson, K.B., Biographical Tribute to Professor E. H. Thompson

Hilger & Watts Ltd

Geomatic Engineering

LDUSC-GEOM-25

29

UCL Science and Engineering Collections