This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
This image is released under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group
© The Board of Trustees of the Science Museum, London
Science Museum Group
© The Board of Trustees of the Science Museum, London
Science Museum Group
© The Board of Trustees of the Science Museum, London
Science Museum Group
© The Board of Trustees of the Science Museum, London
Science Museum Group
© The Board of Trustees of the Science Museum, London
Calculating scale, boxwood weighted with brass, 9" x 1 1/2" x 3/4" for gross and tare weights of ship's cargoes, engraved "Robert Ludgate, Custom House, London, 1807"
Ready reckoner, boxwood weighted with brass, for gross and tare weights of ship's cargoes, engraved "Robert Ludgate, Custom House, London, 1807". Tare is the weight of the packaging or container. Scales are given for finding the gross weight if the tare weight is set at at 7lbs or at a percentage of the weight of the goods.
On display
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Details
- Category:
- Mathematics
- Object Number:
- 1953-339
- Materials:
- box (wood), brass (copper, zinc alloy)
- Measurements:
-
overall (flat): 20 mm x 40 mm x 235 mm, 0.71 kg
- type:
- ready reckoners (cargo)
- taxonomy:
-
- furnishing and equipment
- tools & equipment
- calculator
- credit:
- Mr George D. Blatchford
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Rights
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Data in the title, made, maker and details fields are released under Creative Commons Zero
Descriptions and all other text content are licensed under a Creative Commons Attribution 4.0 licence
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