Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model violin signs like this served both

signs like this served both as legal enforcement tools and visible community alerts during outbreaks of contagious illnesses such as measles

• Type: Wooden tube console radio

Lower cabinets: 41" W x 13

5" W x 2" D x 6" H

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

Contemporary Battery-Powered 4-Cylinder Driveshaft Demonstrator Model violin signs like this served bothBattery 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