Maximum error tolerance +/ - 3mmHg

99.99 % pure Mercury

Precision air release valve, wear free with regulation

Micro filter for long life

Cuff with two tube rubber bladder

Metal face plate with easy to read YELLOW scale upto 300mmHg

Mercury lock to secure mercury during storage, transport or maintenance

Special seal against mercury contamination

Fold down cover with spring lock mechanism

Large storage compartment for cuff + Rubber bulb

Cleaning device for glass tube

One year warrenty