Welch Allyn Classic Style Pocket Aneroid with Durable One-Piece Adult Cuff, Without Case. Features : • Certified accurate to ±3mmHg. • Latex free for safety. • Ruby jeweled movement for long life. • Laser-engraved dial face for accuracy. • One-piece cuff is more durable and easier to use. • Thermally treated diaphragm maintains calibration. • Zinc die-cast housing for mechanical stability. • Recessed dial face reduces parallax.