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Circular Ready Reckoner For Metric Conversion

Inventory Number 38945

Acknowledgement: © History of Science Museum, University of Oxford, inv.38945

Item type
Object
Primary inscriptions
JOHN BELLOWS / GLOUCESTER
Physical material
Paper
Dimensions
Height: 114mm Width: 76mm Weight: 0.05kg
Inventory No
38945

Description

Bellows concentric calculator No. 50, for the divisions of the metre into inches. Mounted onto a backing card through central circle with brass eyelet. Manufactured by J. Bellows.

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