8 Calculating Clocks and Discs

8 Rechenuhren und Rechenscheiben
1) Fowlers's "Magnum" Long Scale Calculator, um 1930, Fowler & Co., Manchester, Ø 11,8 cm, in Leder­etui. - 2) Lord's Calculator, um 1900, R.Waddington, Coventry, GB, im Stil einer Taschenuhr, vernickeltes Messing, Ø 7 cm. - 3) Fowler's Universal Calculator, um 1935, William H. Fowler, GB, mit 6 Skalen: C mit Konstanten, Reziprok, Logarithmus, 2 x Sinus und Tangens, Ø 8,7 cm, in Schatulle. - 4) Fowlers's Long Scale Calculator, um 1930, Fowler's Limited, Manchester, Taschenrechner, Ø 6,9 cm, mit englischer Anleitung in Lederetui. - 5) Calculigraphe, um 1900 (System Boucher's Calculator), hergestellt von Fritz-Gustave Chatelain (FC), vernickeltes Messinggehäuse, Ø 5,5 cm. - 6) Halden's Calculex, um 1925, Joseph Halden, Manchester, England, Ø 6 cm, in Lederetui mit 95-seitiger Miniaturanleitung. - 7) Logomat-mini 2000, um 1972, Logomat Rechengeräte, Deutschland, kaufmännische Variante, mit 5 Zusatzscheiben und Lupe in Etui. - Und: 8) Molter Rechenuhr, ab 1920, Variante 2, Vertrieb: Schacht & Westerich, Hamburg, Ø 6,5 cm.
Start Price: EUR 240
Zustand: (2-3/2-3)
8 Calculating Clocks and Discs
1) Fowlers's Magnum Long Scale Calculator, c. 1930, Fowler & Co., Manchester, Ø 4 3/5 in., in leather case. - 2) Lord's Calculator, c. 1900, R. Waddington, Coventry, England, in the style of a pocket watch, nickel-plated brass, Ø 2 ¾ in. - 3) Fowler's Universal Calculator, c. 1935, William H. Fowler, England, 6 scales: C with constants, reciprocal, logarithm, 2 x sine and tangent, Ø 3 2/5 in., in case. - 4) Fowlers's Long Scale Calculator, c. 1930, Fowler's Limited, Manchester, pocket calculator, Ø 2 ¾ in., with English instructions in leather case. - 5) Calculigraphe, c. 1900 (Boucher's Calculator system), Fritz-Gustave Chatelain (FC), nickel-plated brass case, Ø 2 1/8 in. - 6) Halden's Calculex, c. 1925, Joseph Halden, Manchester, England, Ø 2 1/3 in., in leather case with 95-page miniature instructions. - 7) Logomat-mini 2000, c. 1972, Logomat Rechen­geräte, Germany, commercial version, with 5 additional discs and magnifying glass in case. - And: 8) Molter calculating clock, 1920 onwards, variant 2, distribution Schacht & Westerich, Hamburg, Ø 2 ½ in.
Start Price: EUR 240
Condition: (2-3/2-3)