The iPhone of Slide Rules Numberphile
It is American made and one of the most desired collectors item. This is K+E's late production flagship rule, with
unbreakable
cursor, Ivorite body and adjustable frame. The Deci-Lons is constructed on a plastic frame.
century
mint
storage
disney
auto
front
portable
black
walt
limited
fine
vintage
light
train
antique
edition
super
classic
organizer
digital
electric
gold
silver
german
stainless
dollar
radio
steel
large
watch
rare
signed
engine
glass
cover
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