Spiral Gear Calculator, by Elliott Brothers, 20th Century
|Inventory Number:|| 12926|
|Object Type:|| |
|Brief Description:||In box. With typed sheets of instructions.|
12926.1) Spiral gear calculator consisting of flat rectangular sheet of metal engraved, in black and red, diagrams and scale. Moveable metal scale attached to the centre.
12926.2) Metal rule engraved in red and black and fitted into case lid.
12926.3) Wooden fitted case with lid and brass hinges.
12926.4) Typed sheets of instructions.
|Primary Inscriptions:||On box 'SPIRAL GEAR / CALCULATOR'.
'SPIRAL GEAR-CALCULATOR | FOR RIGHT ANGLE SHAFTS'.|
|Provenance:||Presented by the Marconi Corporation in 2003.|
|Collection Group:||Elliott Collection|
There are no associated narratives.