Unidentified

8

Bertin

1

Crichton, John or Joseph

1

Dent, Edward John

1

Dietzgen

1

Kelvin, Bottomley, & Baird, Ltd.

1

Keuffel & Esser Co.

1

Troughton, Edward

1

oxidized brass

18

wood

10

brass

6

glass

6

silver

5

felt

2

gilt

2

mahogany

2

silvered brass

2

copper alloy

1

Sextant

6

Level

4

Armillary Sphere

1

Equipment

1

Indicator

1

Measuring Instrument

1

Mirror

1

Navigational Instrument

1

Ruler

1

Theodolite

1