[Milsurplus] NOS Periscope sextant

[B. Smith]

The periscopic sextant is still quite usable for the amateur navigator. It 
allows marine students to make shots day or night as it has an artifical 
horizon(bubble). Other wise if the student is using the typical marine 
sextant -the student has to be on the water  or create an artifical horizon 
on land which is a very long explaination.  Fair has had these sextants for 
years.  cheap.

73 breck k4che