DMM 5010

Museum: Deutsches Museum, Munich

Title: Sector 

Inventory number: DMM 5010

Date: To be established.

Material: Brass

Dimensions: Limb length: 118 mm; limb width: 14 mm

Description: See Schneider, 1970, p. 82.

Preliminary examination of the metallic scales: The metallic line is indicated as "Red et Met." Usual astronomical symbols, with upper half engraved on the upper limb, lower half in lower limb. The symbol for mercury is wrongly repeated, and it seems that the instrument maker corrected it with the right symbol for jupiter (see picuture). 

References: Schneider, Ivo: Der Proportionalzirkel: Ein universelles Analogrecheninstrument der Vergangenheit. Deutsches Museum: Abhandlungen und Berichte. 38. Jahrgang 1970, Heft 2. München, Düsseldorf 1970, p. 82.

Measurements of Scales (in mm)

"Red et Met."

☉ [sun]

82

☿ [mercury]

87

♄ [saturn]

95

☽ [moon]

100

♀ [venus]

104

♃ [jupiter]

108

♂ [mars]

111