An 18th Century lacquered brass 1½inch single draw telescope, signed on the draw tube I. GILBERT Tower Hill LONDON, with double lens eyepiece focusing, the body tube mounted on compass joint, tapered pilllar support terminating in an iron boring instrument, on detachable tripod base with folding scrolling legs with inswept feet - 6in.(15.2cm)high

細節
An 18th Century lacquered brass 1½inch single draw telescope, signed on the draw tube I. GILBERT Tower Hill LONDON, with double lens eyepiece focusing, the body tube mounted on compass joint, tapered pilllar support terminating in an iron boring instrument, on detachable tripod base with folding scrolling legs with inswept feet - 6in.(15.2cm)high
see Colour Illustration