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Details and Image
Type
Model #.
Aircraft Maker / Name
Instrument Maker
Country
Construction
Date
Scale Length
Area of Use
Ruler
Navigation Ruler
Generic Instrument
The Sillcocks - Miller Company
U.S.A.
Plastic
est. 1060's
2.5 cm x 18.4 cm
Navigation
Comment:
"Used for simple navigation problems such as time and distance, including wind vectors"
Image 1
Image 2
Image 3
