Research and Test Apparatus

A simple instrument now announced by Shaw Moisture Meters, 31 Market Street, Bradford, gives immediate and continuous recording of the humidity of the most ‘dry’ gases. The Shaw Recording Hygrometer gives full‐scale deflexion for readings of 5 per cent R.H. or less and also gives warning of any increase in humidity in less than one second. Owing to the good long term stability no knobs or controls are fitted.