-
Replica of Wilhelm Schickard's Mechanical Cal...
-
Peerless Calculating Machine, c. 1908...
-
Large Collection of Mathematical Literature a...
-
Microcalcolatore tipo 2A, 1952...
-
Edwin Thacher's Cylindrical Slide Rule Calcul...
-
Curta Type I Calculator, 1950...
-
Adix and Certa Adding Machines...
-
4 Mechanical Calculating Machines...
-
2 Machine Running Times Quick Calculators...
-
Herrmann's Rechenknecht, 1875...
-
The "Small" Pocket Calculator, c. 1915...
-
8 Calculating Clocks...
-
The Adder English Adding Machine, c. 1915...
-
4 Early Arithmetic Tools...
-
The Millionaire Calculating Machine, c. 1900...
-
Thomas de Colmar Arithmomètre, c. 1876...
-
French "Système Ader" Wall Telephone, c. 1880...
-
L.M. Ericsson Telephone with Whistle Calling...
-
Accurate Replica of Alexander Graham Bell's T...
-
2 French Telephones...
