A easy rectangular of cardboard, this computing telegraph
might also had been utilized by enterprise owners who had to compute intervals
among dates on a calendar. Fuller's computing telegraph incorporates circular
discs that spin around a metallic pin. such a discs boasted linear scales
representing the 12 months of the yr that spun round a bigger disc, which also
denoted all 12 months of the calendar yr. the opposite aspect of the disc can
be used as a logarithmic calculator, useful for figuring out complicated
equations concerning location, distance, weight and extent.
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