Gilbert Erector Helical Gear
Description
Helical gears to use with the Erector Construction Set. These are designed to work with the 1" hole spacing. Gears will mesh at 90 deg and 180 deg depending which gears are used together. The set screw is ready to be tapped 6-32 thread and the center hole is ready to be drilled 4.2mm. Made in Tinkercad https://www.tinkercad.com/things/geQu4emsKcg
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