DMM 1483
Museum: Deutsches Museum, Munich
Title: Sector
Inventory number: DMM 1483
Signature: "N. ZS."
Date and Place: To be established.
Material: Brass, tips and center of steel
Dimensions: Length of limb 311 mm (without pointer); width of limb: 18 mm.
Description: See Schneider, 1970, p. 78.
Preliminary examination of the metallic scales: metallic line indicated as "Linea Metallorum". Quicksilver indicated with an abbreviation looking like a greek ro letter surmounted by a "u," followed by "Silb". On the other side of the sector, scales for the weight of lead ("Pley"), iron ("Eisen") and stone ("Stein") balls, on the upper limb for "Hessisch Gewicht", on the bottom limb for "Nurnberger Gewicht"
References: Schneider, Ivo: Der Proportionalzirkel: Ein universelles Analogrecheninstrument der Vergangenheit. Deutsches Museum: Abhandlungen und Berichte. 38. Jahrgang 1970, Heft 2. München, Düsseldorf 1970, p. 78.
Measurements of Scales (in mm)
"Linea Metallorum"
Golt | 130 |
[abbr.]Silb | 140 |
Pley | 152,5 |
Silb | 158 |
Kup | 165 |
Eis: | 172,5 |
Zin | 177 |
"Hessisch gewicht"
Stein | Eisen | Pley | |||
1 | 77 | 1 | 51,5 | 1 | 44 |
2 | 98 | [2] | 64,5 | [2] | 55,5 |
3 | 112 | [3] | 74 | [3] | 63,5 |
4 | 124 | [4] | 82 | [4] | 70 |
5 | 133 | 5 | 88 | 5 | 75 |
[6] | 93,5 | [6] | 80 | ||
[7] | 98,5 | [7] | 84 | ||
[8] | 103 | [8] | 88 | ||
[9] | 107 | [9] | 92 | ||
10 | 111 | 10 |
95 |
"Nurnberger gewicht"
Pley | Eisen | Stein | |||
1 | 45 | 1 | 53 | 1 | 79,5 |
[2] | 57 | [2] | 66 | 2 | 100 |
[3] | 65 | [3] | 76 | 3 | 115 |
[4] | 72 | [4] | 84 | 4 | 126 |
5 | 77 | 5 | 90 | 5 | 136 |
[6] | 82 | [6] | 96 | ||
[7] | 86 | [7] | 95,5 | ||
[8] | 90 | [8] | 106 | ||
[9] | 94 | [9] | 110 | ||
10 | 97 | 10 | 114 |