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 Practicioners, Paramedics, Nurses, Hospitals, Physiotherapists, Podiatrists and various other professions. Features ― Comfortable handling thanks to its flat construction ― Outstanding ergonomics and simple adaptation for left or right handed use ― Replaceable manometer housing ― Brass valve screw works smoothly and is adjustable to exact settings ― User-friendly valve cap for ease of use, even with gloves ― Latex free bladder