DMM 62678
Museum: Deutsches Museum, Munich
Title: Sector by N. Bion
Inventory number: DMM 62678
Date: End of the 17. century/ beginning of the 18.
Material: Brass
Dimensions: Lenght of limb: 166 mm; width: 15 mm
Signature: "N. Bion AParis" ["A" merges with "P"].
Description: See Schneider, 1970, p. 87.
Preliminary examination of the metallic scales: The front presents a metallic line with 6 values. Planetary symbols on the metal scale, indicated as "Les Metaux". 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".
References: Schneider, Ivo: Der Proportionalzirkel: Ein universelles Analogrecheninstrument der Vergangenheit. Deutsches Museum: Abhandlungen und Berichte. 38. Jahrgang 1970, Heft 2. München, Düsseldorf 1970, p. 87.
Measurements of Scales (in mm)
"Les Metaux"
☉ [Sun, Gold] |
118 | |
♄ [Saturn, Lead] |
140 | |
☽ [Moon, Silver] |
145 | |
♀ [Venus, Copper] |
152 | |
♂ [Mars, Iron] |
158 | |
♃ [Jupiter, Tin] |
162,5 |
"Calibre des pieces"
1/4 | 33 |
1/2 | 42 |
1 | 53 |
2 | 67 |
3 | 72 |
4 | 84 |
5 | 91 |
6 | 96 |
7 | 102 |
8 | 106,5 |
9 | 109 |
10 | 112 |
15 | 129,5 |
20 | 143 |
25 | 154 |
30 | 163 |
35 | 171,5 |
40 | 179,5 |
45 | 186,5 |
50 | 194 |
55 | 201 |
60 | 207 |
64 | 211 |
"poids des boulets"
1/4 | 32 |
1/2 | 40,5 |
1 | 51,5 |
2 | 65 |
3 | 74 |
4 | 82 |
5 | 87 |
6 | 92 |
7 | 98 |
8 | 102 |
9 | 105 |
10 | 108 |
15 | 123,5 |
20 | 136,5 |
25 | 148 |
30 | 157 |
35 | 165 |
40 | 172 |
45 | 179 |
50 | 186 |
55 | 193 |
60 | 198,5 |
64 | 204 |