Calculator
Shirley Institute
Category
Machinery and industrial devices
Date
Unknown
Materials
Place of origin
Manchester
Order this imageCollection
Quarry Bank, Cheshire
NT 1461713
Summary
A conversion calculator, metric type GP, used to convert between various yarn quality measuring systems, produced and distributed by the Shirley Institute, Didsbury in Manchester. It has a movable scale to convert between the yarn measuring systems.
Makers and roles
Shirley Institute, manufacturer