Microscope cloth counting glass by J. Casartelli & Son of Manchester. Circa 1910.

In original black leather case with satin and velvet lining.

Marked: J. CASARTELLI & SON SALFORD.6. Rd 523462.

Registered design number: 523462 (1909).

Scales divided in to: 0 – ¼ - ½ - 1 inch. and 1 - 10 mm.

Base marked: 23.

Case dimensions: 6.5 x 5.5 x 3.5 cm.