Coradi, G.

1

Gaertner Scientific Corporation

1

Reeves, Edward Ayearst

1

Ross, Harry

1

Unidentified

1

W. M. Welch Scientific Company

1

Wright, George

1

aluminum

11

brass

3

plastic

3

wood

3

copper

2

steel

2

cardboard

1

celluloid

1

glass

1

Astrolabe

1

Binoculars

1

Calculator

1

Chronometer

1

Compass

1

Equipment

1

Observatory

1

Pantograph

1

Pendulum

1

Prism

1