Faber-Castell 2/66/d Demegraph




Length  33cm
Number of scales No clear number due to the special nature of this slide rule
Country of origin Germany
Country of manufacturing Germany
Year of manufacturing 1954
Status of the slide rule Normal signs of use
Material of the slide rule Plastic
Type of cursor Clear plastic
Status of the box Normal signs of use
Type of box Hinged box with soft fabric liner. Small locks on the side
Status of the manual None
Collection number 201
Further comments This slide rule is very rare. It is the most complex one of the 66 series, specially developed for typographers and printers.

The rule is based on an invention of Mr. Schirmer. The patent number 804932 can be found in the patent section of my website.

Interesting to notice that this 2/66/d is completely different from the 2/66.


 Last updated: 04-09-2009