Erka ‘Switch’ Aneroid Sphygmo The Erka Switch is manufactured from shock-resistant polycarbonate. It is both elegant and robust, and has passed the shock test according to AAMI SP9. The sight glass is chemically stable and unbreakable. Available with a latex free bladder. The Erka Switch is currently used worldwide by: General Practitioners, Paramedics, Nurses, Hospitals, Physiotherapists, Podiatrists and various other professions. Features Comfortable handling thanks to its flat construction Outstanding ergonomics & simple adaptation for left or right handed use Replaceable manometer housing Brass valve screw works smoothly & is adjustable to exact settings User-friendly valve cap for ease of use, even with gloves Liberty latex free cuff and bladder #Note: These units are supplied with Liberty Cuffs