Microscope cloth counting glass by J. Casartelli & Son of Manchester.
In original maroon leather velvet lined case.
Marked: J. CASARTELLI & SON SALFORD.6. Rd 14755.
Registered design number: 14755 (1890).
Scales divided in to: 1 – 2 inches, 1 – 20 mm, and 5/M, 6/M, 10/M & 37/200.
Case dimensions: 12.5 cm x 8 cm. x 5.5 cm.
For a similar microscope cloth counting glass by Casartelli see the collection of the Science Museum, London. Object number: 2016-2006.