Description

A small hand held instrument which would appear to be for measuring microscope slide samples or similar. The tube body is just 25 mm long and has an adjustable eye-piece lens (signed ‘C. Baker, London’). It focusses via the eye-piece which can be turned inwards or outwards on its fine thread. The other end holds a small glass in a cell which has fine etched gratings; one reads to 1/10 mm and the other cell reads 1/100.

The small nickel silver holder has a sprung clamp allowing the user to comfortably hold the tube.

The glass 1/10 mm grating has some yellow canada balsam visible on the lens. This does not affect the lines of the grating. I have not attempted to clean it off.

This small instrument sits in a plush lined leather case ( 62 mm x 45 mm).