Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model violin a Portuguese line of wine

a Portuguese line of wine

who became noted for producing historically accurate reproductions of presidential likenesses

25"D x 40"H

A central pull-out writing or sorting surface extends from the midsection

Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model violin a Portuguese line of wineBattery powered mechanical demonstrator model illustrating the operation of a four cylinder engine and driveshaft system. Constructed primarily from finished hardwood, the piece features four simulated cylinder blocks with reciprocating pistons connected via rods to a central crankshaft. As the unit runs, the pistons move in sequence, transferring motion through the crank to demonstrate rotational output. A compact motor housing with a small toggle