DMM 26953
Museum: Deutsches Museum, Munich
Title: Sector by Baradelle
Inventory number: DMM 26953
Signature: "Baradelle AParis"
Date: To be established.
Material: Brass
Dimensions: Lenght of limb: 165 mm; width: 16 mm
Description: See Schneider, 1970, p. 89.
Preliminary examination of the metallic scales: Planetary symbols on the metal scale, indicated a "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. 89.
Maurice, Daumas: Les instruments scientifiques aux XVIIe et XVIIIe siecle. Paris, 1953, p. 380.
Measurements of Scales (in mm)
"Les Metaux"
☉ [Sun, Gold] |
117 | |
♄ [Saturn, Lead] |
138 | |
☽ [Moon, Silver] |
143 | |
♀ [Venus, Copper] |
150 | |
♂ [Mars, Iron] |
156 | |
♃ [Jupiter, Tin] |
160 |
"Poids des Boulets"
1/4 | 32 |
1/2 | 40 |
3/4 | 46 |
1 | 51 |
2 | 64 |
3 | 73 |
4 | 80,5 |
5 | 87 |
6 | 92 |
8 | 102 |
10 | 110 |
12 | 117 |
14 | 123 |
16 | 129 |
18 | 134 |
20 | 139 |
22 | 143 |
24 | 147 |
27 | 153 |
30 | 158 |
33 | 164 |
36 | 168 |
40 | 174 |
48 | 185 |
55 | 194 |
60 | 199 |
64 | 204 |
"Calibre des Pieces"
1/4 | 34 |
1/2 | 43 |
3/4 | 49 |
1 | 53,5 |
2 | 67 |
3 | 77 |
4 | 84 |
5 | 90 |
6 | 96 |
8 | 106 |
10 | 115 |
12 | 121,5 |
14 | 128 |
16 | 134 |
18 | 139 |
20 | 144 |
22 | 148 |
24 | 153 |
27 | 159 |
30 | 164 |
33 | 170 |
36 | 175 |
40 | 181 |
48 | 192 |
55 | 201 |
60 | 206 |
64 | 212 |