A 10″ slide rule with magnesium body (stock and slide) and steel stops. The slide has ridges and the stock is grooved. The glass cursor…
A 10″ slide rule made of molded plastic. It is perhaps one of the last models produced by Pickett in the special “eyesaver” format. The…
A 10″ slide rule made of PVC with grooved rule and ridges on the slide. There are stainless steel stops on both sides. The cursor…
A 4″ (more accurately, 11 cm) System Rietz type slide rule is made of celluloid (or the plastic Astrolon) on a mahogany base. It is…
A 11.5 cm slide rule; it is essentially a white envelope in which there is a circular sheet that can rotate, with the centre being…
A 5″ metal slide rule. The material seems to be common sheet metal which is shiny on the inside but has a gray matte surface…
A 5″ Mannheim type slide rule made entirely of plastic in the System Rietz style. There are four scales at the front, with three scales…
A 10″ Plastic slide rule with grooved frame, a flat plastic cursor with multiple hairlines, and ridged plastic edges. There are black plastic stops on…
A 10″ boxwood slide rule with the scales printed on a white surface. The opposite side has information useful for a number of mathematical calculations.…
Ironically, the Ever There slide rule was not there. A green cardboard case contains only the instruction manual. It once contained a 5″ Mannheim slide…