DMM 33750T002
Museum: Deutsches Museum, Munich
Title: Sector by Michael Butterfield
Inventory number: DMM 33750T002
Date: End of 17./beginning of 18 century
Material: Brass
Dimensions: Lenght of limb: 166 mm; width: 15 mm.
Signature: "Butterfield AParis Fecit" ["A" merges with "P"] note the "tt" in "Butterfield". On the other side "v. R." probably the owner.
Description: See Schneider, 1970, p. 88.
Preliminary examination of the metallic scales: Planetary symbols on the metal scale, indicated a "Les Metaux". No caliber scales on the border. From the Butterfield sectors owned by the Deutsches Museum probably the only one which is fine engraved.
References: Schneider, Ivo: Der Proportionalzirkel: Ein universelles Analogrecheninstrument der Vergangenheit. Deutsches Museum: Abhandlungen und Berichte. 38. Jahrgang 1970, Heft 2. München, Düsseldorf 1970, p. 88.
Measurements of Scales (in mm)
"Les Metaux"
☉ [Sun, Gold] |
119 | |
♄ [Saturn, Lead] |
140 | |
☽ [Moon, Silver] |
145,5 | |
♀ [Venus, Copper] |
152 | |
♂ [Mars, Iron] |
158 | |
♃ [Jupiter, Tin] |
163 |