This Table Top Large Face Aneroid Sphygmomanometer model is now equipped with an altogether new self-zero function. Its important features are below:- -It comes with a Measurement Range of 0-300mmHg -Inflation procedure can be performed manually through Air Release method -It has Round Aneroid Scale?0-300mmHg?display -It comes with Glow-in-Dark Scale -It has a Cuff size of 511 x 145 mm ( Nurse type)