Unmarked Spectroscope, collimator slit with fine adjustment knob with dial, its arm with a horizontal fine adjusting tangent screw to vernier, counter balance weight, all resting on a cast iron tripod base.
Auctioneer:
Skinner
Date:
2014-06-19
Unmarked Spectroscope, the horizontal disc calibrated 0-120 with magnifier, fine adjustment knob for vernier, dual prisms and 11-in. scopes with rack focusing and collimator, all Read more…
Auctioneer:
Skinner
Date:
2014-06-19
Unmarked Spectroscope, with 6-in. scope on a rotating arm, collimator tube on a stationary arm, prism and side tube, adjustable stem with knurled lock-down screw, Read more…
Auctioneer:
Skinner
Date:
2014-02-25
Eight-prism Brass and Cast Iron Spectroscope, unmarked, the 11-in. scope with rack focusing, main prism adjustment drum, and vernier, all secured to a movable arm Read more…
Auctioneer:
Skinner
Date:
2014-05-03
Seven 19th Century Spectroscopes, London, lacquered brass instruments, five marked "John Browning," two with stands, an unmarked one, and a R. & J. Beck "Thorp's Read more…
Auctioneer:
Skinner
Date:
2018-04-20
