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.
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. 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 |