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.

ReferencesSchneider, 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