Folding square in brass signed Pigeon A Lyon

Made:
1772 in Lyons

Folding square in brass signed Pigeon A Lyon, c. 1770

Details

Category:
Mathematics
Object Number:
1991-370
Materials:
brass
type:
squaring drawing instruments and folding set squares
credit:
Christie, Manson and Woods Limited

Parts

Folding square in brass signed Pigeon A Lyon

Folding square in brass signed Pigeon A Lyon

Folding square in brass signed Pigeon A Lyon, c. 1770.

Materials:
brass (copper, zinc alloy)
Object Number:
1991-370/1
type:
set square
Image ©
The Board of Trustees of the Science Museum
Case for folding square

Case for folding square

Case for folding square in brass signed Pigeon A Lyon, c. 1770.

Object Number:
1991-370/2
type:
case
Image ©
The Board of Trustees of the Science Museum
Metal component on string

Metal component on string

Metal component, possibly a weight, on a string, associated with folding square in brass signed Pigeon A Lyon, c. 1770.

Materials:
metal (unknown)
Object Number:
1991-370/3
type:
component
Image ©
The Board of Trustees of the Science Museum