Mid Eighteenth Century Non Achromatic Decagonal Reverse Taper Telescope by John Gilbert Surveyors Barometer The inner lid contains a

The inner lid contains a second dial which is employed as a wind disc or cyclometer to be used in conjunction with the barometer when a storm is identified

A very seldom seen barometer which will make a stunning centrepiece for a collection even in less tumultuous climates

The inner barometer dial has a scale measuring 27

Circa 1755

Mid Eighteenth Century Non Achromatic Decagonal Reverse Taper Telescope by John Gilbert Surveyors Barometer The inner lid contains aFor sale, a mid eighteenth century, non achromatic decagonal reverse taper single draw marine telescope by John Gilbert of Tower Hill London. This super example has a one inch non achromatic single objective lens with original dust slide and measures 38 inches closed and 46 inches extended. The mahogany ten sided tapered barrel holds a single draw tube containing five lenses and is completed with a bulbous type eyepiece with dust slide, common during