McClean's Patent Star Spectroscope by Browning

Catalogue number #380991617

McClean's Patent Star Spectroscope 1	McClean's Patent Star Spectroscope 2	McClean's Patent Star Spectroscope 3	McClean's Patent Star Spectroscope 4	McClean's Patent Star Spectroscope 5	McClean's Patent Star Spectroscope 6	McClean's Patent Star Spectroscope 7

Description:

Mclean's patent star spectroscope and Browning's direct vision spectroscope. Direction for both and the conversion from star to direct view spectrometer (by changing the lens from concave cylindrical to a convex lens: both present)are supplied with the images from John Browning's pamphlet "How to ork with the Spectroscope". Signed on the side McClean's Star Spectroscope Patent and on the eyepiece John Browning 63 Strand, London. Circa 1870 length 4.5" (11 cm) screw thread diameter 1.25"

Sale Details:

Price: £ 460.00

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