Unidentified

23

Stanley Rule & Level Co.

2

William Elliott & Sons

2

Browne, John

1

Cary, John Cary II and George

1

Cole I, Benjamin

1

E. A. Stearns & Co.

1

Etzlaub, Erhard

1

Gilbert, John

1

Greenough, Thomas

1

boxwood

45

brass

17

mahogany

6

glass

4

ivory

4

rosewood

4

iron

3

paper

3

leather

2

mercury

2

Ruler

11

Quadrant

6

Sundial

6

Navigational Instrument

5

Nocturnal

5

Slide Rule

4

Backstaff

2

Barometer

1

Calculator

1

Level

1