Aneroid Sphygmomanometer by Down Bros Ltd, London. Circa. 1920 SOLD The rear of the canvas

The rear of the canvas is stamped 'Winsor & Newton'

weighing 2

Half bound in a burgundy leather with marbled boards

SoldA sterling silver pocket watch by William Ehrhardt

This is a lovely early example of a revolutionary portable instrument which enabled an easier and more accurate measuring of blood pressure than the preceding mercurial manometer allowed

Aneroid Sphygmomanometer by Down Bros Ltd, London. Circa. 1920 SOLD The rear of the canvasAneroid Sphygmomanometer by Down Bros Ltd, London. Circa. 1920. This device was used to measure blood pressure by way of a cuff. This is a lovely early example of a revolutionary portable instrument which enabled an easier and more accurate measuring of blood pressure than the preceding mercurial manometer allowed. The instrument shows some signs of age to the casing but overall remains in a very good condition.