Object of the Month – October 2017

October’s Object of the Month is a mechanical calculator made by Muldivo, which probably dates from the 1930s or 1940s. It was chosen by Vicky Geddes, Digital Engagement Intern. The calculator was donated to the museum in 1982.  Mechanical calculators Mechanical calculators used a series of gears and pinwheels to calculate sums, and were popular… Read More »