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 corrosionCuff comes with an extra Velcro fastening for added grip Top end model Specially designed automatic deflation valve Rich white body colour using classic high stove painting Extra soft Bladder and Bulb to give a comfortable wrap around the arm 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: 14.5 cm x 51 cm Pressurization: Manually using rubber bulb Deflation : Automatic