,Plumb bob 



PLUMB BOB 

 SECTION 



•Stylus 

 .Disc cup 



WATCH 

 SECTION 



.Watch dial 



^Watch setting 

 stem 



Figure 271. Type "W" drift 

 indicator. 



Slug Trap 



/ 



Batteries 



Lights, 

 Camera Lens 



Angle 

 Unit 



Figure 272. Regular single shot. 



