Bellows' concentric ready reckoners

Made:
1878-1900 in England
inventor:
John Thomas Bellows
Bellows' concentric ready reckoner calculators for conversion Bellows' concentric ready reckoners for conversion of the Bellows' concentric ready reckoners for conversion of the Bellows' concentric ready reckoners for conversion of the

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

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License this image for commercial use at Science and Society Picture Library

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Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Creative Commons LicenseThis image is released under a CC BY-NC-SA 4.0 Licence

Buy this image as a print 

Buy

License this image for commercial use at Science and Society Picture Library

License

Bellows' concentric ready reckoner calculators for conversion
Science Museum Group
© The Board of Trustees of the Science Museum

Bellows' concentric ready reckoners for conversion of the
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Bellows' concentric ready reckoners for conversion of the
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Bellows' concentric ready reckoners for conversion of the
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Bellows' concentric ready reckoner calculators for conversion of the Metric System to British Imperial weights and measures

(ASPECT) Bellow's concentric ready reckoners for conversion of the Metric System to British Imperial weights and measures, late 19th century. John Bellows devised various tabular calculators for various uses.

Details

Category:
Mathematics
Object Number:
1994-701
Measurements:
Folded: 131 mm x 303 mm x 10 mm,
Open: 131 mm x 80 mm x 10 mm,
type:
ready reckoners (weights and measures)
credit:
Dr K.M. Charity