72: A PENNSYLVANIA RAILROAD IMPACT REGISTER INSTRUMENT

The aluminum case with copper plate impressed with designation of FREIGHT AGENT INDIANAPOLIS IND PENNSYLVANIA R.R. houses the spring driven, key wind eight day instrument used primarily for determining and recording impact speed of freight cars and providing information when excessive impacts occur.
Measures 7 x 7 x 15 inches.
As shown, the specifics of exact condition are not known.
$300 - $500