PIONEER INSTRUMENT COMPASS
6 1/4" MAX DIAMETER
4" COMPASS GLASS
3 3/4" DEEP
WITH GRADUATED DEGREE SCALE
ELECTRICAL CABLE ENTRY FOR LIGHT.
MAKER'S PLATE READS
"MADE IN USA
TYPE 1809-4-B SERIAL NUMBER H 2217
PIONEER INSTRUMENT
DIVISION OF BENDIX AVIATION CORPORATION
BENDIX NEW JERSEY"
METAL CONSTRUCTION
NO LIGUID IN GLASS
HOUSED IN WOODEN BOX WITH A SLIDING LID