-
Object number
W-82L
-
Classification
Mathematical
-
Object name
Protractor
-
Title
Protractor: Part of etui
-
Creator
Facini, Bernardus
-
Description
Rectangular protractor with bevelled edges. Side with protractor scales (0-180° by 1°, 180° by 10°) also has tables telling the central angle measure and the interior angle measure for polygons of sides 3-20. Other side has a scale for sines 0-90 degrees with transversals so measurements can be read to minutes. Also, a diagonal scale, 0-900 with 10 x 1000 grid.
-
Inscription/Sig.
"Sinus totus"
-
Material
brass
-
Place Of Prod.
Italy
-
Dimensions
|
Imperial(in) |
|
Metric(cm) |
| Height |
|
|
11.1 |
| Width |
|
|
2.9 |
| Depth |
|
|
0.1 |
| Diameter |
|
|
|
| Circumference |
|
|
|
-
Frame
|
Imperial(in) |
|
Metric(cm) |
| Height |
|
|
|
| Width |
|
|
|
| Depth |
|
|
|
| Diameter |
|
|
|
