PICKETT HAMILTON FORT

UF Counter Balance Fort
SN A sunken, circular, concrete pillbox used on airfields. They remained flush with the surface to permit the free movement of aircraft, but if attack threatened, could be raised, hydraulically or by a counterbalance, and manned to give covering fire.
CL MILITARY DEFENCE AND FORTIFICATION
BT AIRFIELD DEFENCE SITE

 
 

PICKETT HAMILTON FORT

UF Counter Balance Fort
SN A sunken, circular, concrete pillbox used on airfields. They remained flush with the surface to permit the free movement of aircraft, but if attack threatened, could be raised, hydraulically or by a counterbalance, and manned to give covering fire.
CL MILITARY DEFENCE AND FORTIFICATION
BT PILLBOX