For sale is a Vintage WW2 era Royal Navy / Royal Air Force Pattern 1152 Azimuth Circle Tool in a wooden case. My grandfather was a shipbuilder in Boston during WW2 and this comes from his collection. As best I can tell, it seems complete and in working order. As I have no experience with these tools, I can only give you a layperson's opinion thus I have to sell this as-is. 

Box Measures: 6" wide, 7.5" long, 3" tall. 

Azimuth measures 6" long