Metcheck Pen Arm - T Shape 165mm Hygrograph Charts Measuring element made from well-annealed

Measuring element made from well-annealed optical glass sphere

Each pack contains 200 charts which is four years’ worth of chart record papers

The sphere is made from well-annealed optical glass and the hours of sunshine are recorded onto a card inserted into the base of the recorder

The scale also provides readings in Fahrenheit

Ships complete with one protective rubber sensor boot

Metcheck Pen Arm - T Shape 165mm Hygrograph Charts Measuring element made from well-annealedDescription Features Specification Replacement stainless steel Short & Mason barograph arm. Ideal for those looking to replace their existing instrument arm due to wear and tear. Overall arm length can shorten with time due to the repeat changing of barograph nibs or pens. Barograph ink can be slightly corrosive so remember to gently wipe the end of your instrument arm when changing the nib or adding ink to extend the use of your barometer. Overall