Product Details First grade quality - virgin material usedPurity of mercury 99.99%0 to 300 mm of Hg scale with elegant finishFine numbering and durable background contrast paint for clear visibilitySpecial control valve for perfect pressure dropBest quality cuff for getting excellent gripProven and tested rubber material for Bladder and Bulb to give more durabilitySurface plating adapted to all exposed metal parts to prevent corrosion Desktop Model Cost-effective Meant especially for medical students Available in Normal bandage type cuff Best suited for General Hospital Wards Measurement Unit : mm Hg Resolution : 2mm Hg Measurement method : By Auscultation with Stethoscope Pressure display range : 10 – 300 mm Hg Accuracy : +/- 3mm Hg (Pressure) Cuff size: 102 cm Pressurization : Manually using rubber bulb Deflation : Manual control valve