Plotting scale

Plotting scale, 12"; brass; 17th century, diagonal scale and scales of equal parts and chords

Details

Category:
Mathematics
Object Number:
1917-84
Materials:
brass (copper, zinc alloy)
Measurements:
overall (flat): 3 mm x 307 mm x 32 mm, 0.17 kg
type:
drawing instruments, drawing scales (plotting) and diagonal scales
credit:
Thomas H. Court