Aristo Rietz Slide Rule: Model Nr. 89
Accession Number: 2010.lej.36
A 5″ slide rule made with astralon and plexiglass. This slide rule is designed in the rietz style common to many German slide rules. The slide is grooved and there are no stops present. The cursor is made of concave plastic with four hairlines. A five inch ruler is printed on the back surface. Scales: Front: K, A, B, CI, C, D, L; Back: S, ST, T, C, D. Markings: [Serial] G574; The following is printed in the back surface: HB Estructuras Metalicas S. A., Bogata “Cali ” Medellin; The name “Moxon” is scratched in back surface
Primary Materials: Astrolon, Plexiglass
Markings: Old Inventory Number = 36.
Length = 15.5 cm; Width = 3.3; Height = 1 cm
Function: Facilitating calculations.
Condition: Item is in very good condition.
Manufacturer: Aristo. Hamburg, Germany
Date of Manufacture: 1957