A 20th-Century steel and black-enamelled German spectroscope
Carl Zeiss Jena Nr.2388 Germany
with aperture adjustment to the eyepiece, sliding body-tube, internal scale and adjustment screws
3 5/8in. (9.2cm.) long
A 20th-Century steel and black-enamelled German spectroscope
Carl Zeiss Jena Nr.2388 Germany
with aperture adjustment to the eyepiece, sliding body-tube, internal scale and adjustment screws
3 5/8in. (9.2cm.) long
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