DMM 26146

Museum: Deutsches Museum, Munich, Online Collection

Title: Sector by J P Bischoff

Inventory number: DMM 26146

Signature: "J P Bischoff Ansbac." 

Date: Beginning 18. century

Material: Brass

Dimensions: Limb length 218 mm; lmb width: 24 mm

Description: See Schneider, 1970, p. 81. 

Preliminary examination of the metallic scales: Metallic line indicated as "Lin: Metall:". Usual astronomical signs, very small.

ReferencesSchneider, Ivo: Der Proportionalzirkel: Ein universelles Analogrecheninstrument der Vergangenheit. Deutsches Museum: Abhandlungen und Berichte. 38. Jahrgang 1970, Heft 2. München, Düsseldorf 1970, p. 81.

Measurements of Scales (in mm)

"Lin: Metall:"

☉ [sun]

93,5

☿ [mercury]

98,5

♄ [saturn]

108

☽ [moon]

113

♀ [venus]

118
[symbol for bronze] 122

♃ [jupiter] a[nglicum]

123

♃ [jupiter] v[ulgare]

126

♂ [mars]

127