MPS A I 126
Museum: Mathematisch-Physikalischer Salon, Online Collection
Title: French Sector/Proportional compass
Inventory number: MPS A I 126
Place, Date: Paris 1715
Material and technique: Brass, engraved
Dimensions: Length = 14,8 cm; width = 3,2 cm; thickness = 0,45 cm
Manufactured by: Maulevaut, Jean
Notes: Planetary symbols on the metal scale. Two other scales, each on a face, when the sector is opened at 180 degrees, on the border. Called respectively "poids des boulets" and "Calibre des pieces"
Measurements of Scales (in mm)
|
Gold (Sun) |
99,5 |
|
Lead (Saturn) |
117,5 |
|
Silver (Moon) |
122 |
|
Copper (Venus) |
127,5 |
|
Iron (Mars) |
132,5 |
|
Tin (Jupiter) |
136 |
"Calibre des pieces"
|
1/4 |
33,00 |
|
1/2 |
42,00 |
|
3/4 |
48,00 |
|
1 |
53,00 |
|
2 |
67,00 |
|
3 |
76,00 |
|
4 |
84,00 |
|
5 |
90,00 |
|
6 |
96,00 |
|
7 |
100,00 |
|
8 |
106,00 |
|
10 |
113,00 |
|
12 |
125,00 |
|
15 |
130,00 |
|
18 |
138,00 |
|
20 |
142,50 |
|
24 |
151,00 |
|
27 |
157,00 |
|
30 |
163,00 |
|
33 |
168,00 |
|
36 |
173,00 |
|
40 |
179,00 |
|
45 |
186,50 |
|
50 |
193,00 |
|
55 |
199,00 |
|
60 |
205,00 |
"poids des boulets"
|
1/4 |
32,00 |
|
1/2 |
40,00 |
|
3/4 |
46,00 |
|
1 |
51,00 |
|
2 |
64,00 |
|
3 |
73,00 |
|
4 |
81,00 |
|
5 |
87,00 |
|
6 |
92,00 |
|
7 |
97,00 |
|
8 |
102,00 |
|
10 |
109,50 |
|
12 |
116,50 |
|
15 |
125,00 |
|
18 |
134,00 |
|
20 |
138,00 |
|
24 |
147,00 |
|
27 |
153,00 |
|
30 |
158,50 |
|
33 |
163,50 |
|
36 |
168,00 |
|
40 |
175,00 |
|
45 |
181,50 |
|
50 |
188,00 |
|
55 |
194,00 |
|
60 |
199,00 |