NEW MEMBER NEEDS HELP IDENTIFYING JAPANESE WW2 INSTRUMENT

[Tim S.]

Hello Everyone! I'm new to this group. I ran across a WW2 era Japanese instrument from either a navy airplane or ship. My father brought it back from the Pacific during the war. Please see attached pics. Does anyone happen to know what this is?
Thank you for your assistance. Tim

 

[Snautzer01]

Looks like an instrument used by a surveyor. Top of the theodolite.

Plane Table Set Manufacturer in Delhi India by Entek Instruments India Pvt. Ltd. | ID - 3461779

ww2 surveyor instrument - Google zoeken

 

[Crimea_River]

Shinpachi may be able to read the accompanying card and provide some info.

 

[MiTasol]

It could also be a part of a bombsight but those two leveling bubbles very strongly suggest that Crimea is 100% correct.
This is an early British one.
I have never seen any pictures of a Japanese one