300 mm Hg Clinical Sphygmomanometer.  Desk Model in light weight Die-cast Grey Aluminum Case. Complete calibrated V-lock inflation system.  Mylar wrapped Cartridge Tube. Complies with ANSI/AAMI SP-10 Standards for accuracy. (1% full scale +/- 3 mmHg). Designed for medical professionals who need strong reliable, lightweight scientific medical instruments.