pure wool sweaters like these have made it onto the silver screen in naval films like 'Above Us the Waves'

Now Admiralty Chart 1346

code flags or international signal flags are used by ships at sea individually to spell out short messages or in combinations with special meanings

Which is why

it's absorbing to assemble and stands 7

Dr Crabtree's Patent Observatory Magnifier KITCHENWARE pure wool sweaters like theseBelieved by some to have been designed in 1804 by the legendary British inventor and polymath Joseph Crabtree, the functional simplicity of his brass and glass domed "Observatory" magnifier has never been surpassed or needed modification. Magnifies about 3x. Diameter 2", height 1".