A letter-copying machine, and a device for levelling ground. Coloured engraving by J. Pass, 1813.
- Pass, John, active 1797-1815.
- 31 March 1813
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About this work
Letter-copier and leveller ; Fig 1,2,3, Watt's machine for copying letters. 4,5, Charles's leveller. ; J. Pass sc.
London : J. Jones, 31 March 1813.
1 print : engraving, with watercolour ; platemark 26 x 20.1 cm
Wellcome Library no. 40617i