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Technicolor Pilot Balloon Theodolite

This theodolite was made in 1943 by Technicolor Motion Picture Corp, Hollywood California, for the United States Navy.  Marked Type Aero-1930-USN, it has the Navy stamp with an anchor stamped on the gun site.  It very loosely resembles the David White 6061 but is very different in design.  The eyepiece uses an etched glass reticule, rather than the crossed spider webs used in the David White unit.  The tangent screws engage with a different mechanism and are located in reverse of the 6061.  Further the elevation vernier is located on the right side of the circle rather than the left.   Most striking is the use of a pentagonal prism rather than the three sided type used in David White and Warren-Knight units.  This prism is different than the optional erecting prism that is available from Warren Knight as well.    

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Photo of a Technicolor Pilot Balloon Theodolite Front View, Made by Technicolor Motion Picture Co. Rear view photo of a technicolor pilot balloon theodolite
Photo Showing the label on a Technicolor Pilot Balloon Theodolite Photo Showing the David White Prism next to the pentagonal prism of the Technicolor pilot balloon theodolite

Note in the photo above the larger size of the prism housing on the technicolor theodolite compared to the David White prism on the left.  The photo lower left shows the tangent screw engagement lever for on the technicolor theodolite.  

 

 
Drive Type Positively Engaging Tangent Screw Compass No
Display Type Micrometer .1 degree Levels 2 plate,  bubble tube
Main Telescope 42 mm 21x 2deg. Mounting 4 screw leveling head, 3.5"x8tpi
Finder Telescope
No Illumination Not present but may have been an option 
Gun Site Yes 1, 2 way foldable pair, main telescope Weight (theodolite only) 8.6 kg