DMM 56880
Museum: Deutsches Museum, Munich
Title: Sector by Lasnier
Inventory number: DMM 56880
Signature: "Lasnier AParis"
Date: To be established.
Material: Brass
Dimensions: Lenght of limb: 165 mm; width: 15 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" (the latter on the side of metallic scale). Note: fonts similar to DMM 26953, but bigger.
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.
Measurements of Scales (in mm)
"Les metaux"
☉ [Sun, Gold] |
119 | |
♄ [Saturn, Lead] |
140 | |
☽ [Moon, Silver] |
145,5 | |
♀ [Venus, Copper] |
152,5 | |
♂ [Mars, Iron] |
158 | |
♃ [Jupiter, Tin] |
163 |
"Calibre des pieces"
1/4 | 32,0 |
1/2 | 40,0 |
1 | 51,0 |
2 | 64,0 |
3 | 73,0 |
4 | 80,0 |
5 | 86,0 |
6 | 92,0 |
7 | 97,0 |
8 | 100,0 |
10 | 108,0 |
12 | 115,0 |
16 | 126,0 |
20 | 136,0 |
24 | 145,0 |
30 | 156,0 |
33 | 161,0 |
40 | 171,5 |
48 | 182,0 |
55 | 191,0 |
60 | 196,0 |
64 | 200,5 |
"Poids des boulets"
1/4 | 34 |
1/2 | 43 |
1 | 54 |
2 | 67 |
3 | 76 |
4 | 84 |
5 | 90 |
6 | 96 |
[no 7 value] | |
8 | 104 |
10 | 112 |
12 | 119 |
16 | 131 |
20 | 141 |
24 | 150 |
30 | 162 |
33 | 167 |
40 | 179 |
48 | 189,5 |
55 | 198 |
60 | 204 |
64 | 208 |