Tycos Hand Aneroid Blood Pressure Hand Aneroid Sphygmomanometer * Standard Adult Cuff * Unsurpassed reliability in a traditional cuff-mounted design * Certified accurate to+/- 3mmHg * Latex free for safety * Ruby jeweled movement for long life * Laser-engraved dial face for accuracy * Thermally treated diaphragm maintains calibration * Zinc die-cast housing for mechanical stability * Recessed dial face reduces parallax * Ergonomic design works well in right or left hand * Luer lock for easy cuff changes *