Aristo 622 Circular Slide Rule. This is a well-designed, practical, pocket slide rule. It has scales corresponding to C, D, CI, A, and K. The rule is in nearly new condition, pracically unused. The disc and cursor both turn very smoothly.
The leather carrying case is included, and is also nearly new. Also included are the German-language instructions, and the original inspection control slip. Not something one sees every day. A blind stamp on the edge (barely visible near 1.2 on the K scale) reads "2LA 2, " which indicates the rule was manufactured in Hamburg in 1970. Please ask if there are any questions.
The item "Aristo 622 Circular Slide Rule. Rechenscheibe" is in sale since Thursday, October 3, 2019. This item is in the category "Collectibles\Science & Medicine (1930-Now)\Engineering\Slide Rules". The seller is "slide_rule_alley" and is located in Baton Rouge, Louisiana.
This item can be shipped worldwide.