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Six inch ivory sector by John Cail

Six inch ivory sector by John Cail

1825-1848
Instrument in box, by John Cail

Instrument in box, by John Cail

1855-65
Part of combined spirit level & compass, British, 1820-1829

Part of combined spirit level & compass, British, 1820-1829

1820-1829
Safety lamp, Glover and Cail, Mueseler type, from Mr. Glover, maker: John Cail, marking: makers name, 1852

Safety lamp

1852
Daglish's siphon pressure gauge for mine ventilation made by John Cail, Newcastle uopn Tyne

Daglish's siphon pressure gauge for mine ventilation made by John Cail

Box containing 3 plumb bob weights for spirit level with compass and case, by John Cail, Newcastle upon Tyne, 1820-29.

Case for combined spirit level & compass, British, 1820-1829

1820-1829
Spirit level with magnetic compass in case, by John Cail, Newcastle upon Tyne, 1820-29. Used by George Stephenson on the Manchester and Liverpool Railway survey in 1829

Combined spirit level & compass, British, 1820-1829

1820-1829