Vaquez Laubry Classic 0-300mmHg has a holder made of fine leather fabric and air release valve. It has maximum volume and ergonomic shape for comfortable handling and. This is a Spengler Classic model. Adjustable to the arm circumference for factual results. Too narrow or too short bladder the measures are over evaluated. Too broad or too long bladder the measures are under evaluated. It has highly resistant latex free bladder. This is a Dual tube technology. Calibrated cuff for exact positioning to arm circumference. Velcro fastener or triple straps . Made of secure polycotton fabric washable at 30-40°C. The mechanism has high precision and enlarged scale for better accuracy. It is easy to read from any angle. Optimal protection of the mechanism. Large dial, durable, anti corrosion, shock resistant construction complies with the EN ISO 81060 chap. The air release valve has precise and constant deflation controlled by super precise valve.