AN EARLY AIRCRAFT TRAILING WIRE ANTENNA REEL-(minus the wire)
NOTE THE ROBUST HAND CRANK DESIGN AND THE DIGITAL COUNTER
FOR MEASURING ANTENNA LENGTH.  ALSO SEE TELEGRAPH KEY BELOW
In a decision to save weight for extra fuel, Amelia Earhart removed similar items from her Lockheed Electra.
THE ABOVE ANTIQUE ANTENNA REEL WAS PURCHASED ON EBAY
ABOVE - A COMMON TELEGRAPH KEY USED FOR SENDING MORSE CODE.