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Cambridge Observatory eight-foot mural circle

Cambridge Observatory eight-foot mural circle

1832

Object Glass for large mural Circle

Object Glass for large mural Circle

1832

One of two photographs showing a transit instrument by Ertel and a mural circle made by Troughton and Simms at the U.S. Naval Observatory, Washington.

One of two photographs showing a transit instrument by Ertel and a mural circle made by Troughton and Simms

1876

Photograph of a mural circle transit instrument by, Gambey at the Paris Observatory, diameter objective O.12 metres.

Photograph of a mural circle transit instrument by

1884

Instrument component; mural circle, Brass tube. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Brass tube

1832

Instrument component; mural circle, 29 missc brass screws. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

29 missc brass screws

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Weight with hook. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight with hook

1832

Instrument component; mural circle, Sight piece. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Sight piece

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Metal rod. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal rod

1832

Instrument component; mural circle, Metal rod. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal rod

1832

Instrument component; mural circle, Flange and bearing. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Flange and bearing

1832

Instrument component; mural circle, Tapering spindle. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Tapering spindle

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Telescope for large mural Circle, by Troughton & Simms, England, 1832

Telescope for large mural Circle

1832

Circular framework of 8 foot diameter, for large mural Circle, by Troughton & Simms, London, England, 1832

Circular framework of 8 foot diameter, for large mural Circle

1832

Instrument component; mural circle, Metal cuff. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal cuff

1832

Instrument component; mural circle, Metal screws. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal screws

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Sight. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Sight

1832

Instrument component; mural circle, 6 brass weights. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

6 brass weights

1832

Instrument component; mural circle, Weight with hook. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight with hook

1832

Instrument component; mural circle, Metal rod. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal rod

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Metal rod. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Metal rod

1832

Instrument component; mural circle, Weight divided in two. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Weight divided in two

1832

Instrument component; mural circle, Two reflectors. Made by Troughton and Simms Limited in London, England, United Kingdom, 1832

Two reflectors

1832

Tapering spindle with flange and bearing for large mural Circle, by Troughton & Simms, London, England, 1832 With accessories, including screws and metal weights

Tapering spindle with flange and bearing for large mural Circle

1832