DMM 37626

Museum: Deutsches Museum, Munich

Title: Sector by Marquart

Inventory number: DMM 37626

Signature: "Macquant Paris"

Date: To be established. 

Material: Brass

Dimensions: Lenght of limb: 168 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" Note: "calibre des pieces" is on the same side of the metallic scale (see DMM 18760) Note: the "calibre des pieces" scale is very illegible after the "12" value. It looks like there are scratches. 

ReferencesSchneider, 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. 346.

Measurements of Scales (in mm)

"Les Metaux"

☉ [Sun, Gold]

118,5

♄ [Saturn, Lead]

140

☽ [Moon, Silver]

145,5

♀ [Venus, Copper]

152

♂ [Mars, Iron]

158

♃ [Jupiter, Tin]

162

"Calibre des pieces"

1/2 42,5
1 53
2 67
3 76
4 83,5
5 90
6 95
8 105
10 113
12 119,5
[illeg.] [where illegible, not able to identify dots]
[illeg.] "  "
24 150.5
[following values are illegible]

"poids des boulets"

1/2 40
1  50,5
2 63,5
3 73
4 80
5 86
6 61,5
8 101
10 108
12 115
16 126,5
20 136
24 145
30 156
33 161
40 171,5
48 182
55 161
60 167
64 201