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Combined telescope and drum microscope

Year/Period	1860-1890
Maker	STATHAM
Country	United Kingdom
Signature	William E. Statham / Optician / Chemical, Philosophical / & Photographic Instrument Maker, &c. / III Strand, W.C. / Polytechnic Institution, Regent St. and Crystal Palace
Category	Microscopes
Optical 1	Compound
Optical 2	Achromatic
Size of the box (h x w x d)	5.5 × 17.5 × 9.2 cm
Size of the microscope (h x w x d)	Size of the telescope (adjusted for infinity): length 33.5 cm × diameter 2.7 cm; Size of the microscope: height 17.3 cm × diameter 4.2 cm
Inventory number	SM 20

Description

This instrument is known as ‘Stathams Panopticon’, it is stored in a little wooden box covered with brown paper.
The instrument consists of a small achromatic telescope, the aperture of the achromatic objective lens is 21 mm, there is a four lens eyepiece. The eyepiece can be screwed on a simple stand, it functions then as a drum type microscope.
Accessories: a flat mirror, a lens cap, an eye cap and an eye cap with blue filter glass. There are three positive lenses that can be used on the microscope. There are four English object slides.