found.husk.org
images.
tagged section.
2 images.
bubble
instrument
mark ii
nautical
navigation
optical
plan
rangefinder
section
sextant
Flickr Photo Download: sci_museum_sextant_diagrams.jpg
book
donau
german
golden
hagenmaier
otto
section
tapper
ulm
verlag
werner
Golden Ratio (Quarter Life Crisis)
