Screw Machine from SRL

Screw Machine from SRL. http://srl.org/machines/screw.html
Screw Machine from SRL
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Comments (1)

1. J M M 24/04/2011

Screw Machine from Survival Research Labs, Petaluna, CA, built this screw vehicle fitted with little wheels on an Archimedes Screw to move on concrete where it performs well, but it sinks in mud or sand.

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