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kombinator 00Technical Features
Manufacturer: Makeba Germany DDR 
Year: c1950 
Info: This is the Makeba Kombinator, manufactured in Bautzen, Eastern Germany, in the 50’s or 60’s.This device has two 2-cycle scales and two 1-cycle scales, with one of each pair fixed to the hexagonal body of the pencil itself, and kombinatorthe others to an outer hexagonal metal tube that can slide out around the pencil, moving the scales relative to their twins. A metal-framed cursor slides along the entire device. The Kombinator is a precision product. It has engraved 5-inch scales that look good and stay accurate. The photo below shows how the C and D scales are set to perform multiplication by 2. Donated by my friend 
BohdanБогдан Ukraine )