ACCURACY - KARTER KTR-001 mechanical tyre air pressure gauge is calibrated to ANSI B 40.1 Grade B (±2%) international accuracy standard so you get a precise pressure reading every time. Each unit is checked before packing. It shows reading on psi scale which is commonly used in India. 45° ANGLED AND 360° SWIVELLING CHUCK so you can easily take tyre pressure from any angle. It has an extended chuck tip, so you get a good seal with no air leakage. Holds pressure until you press bleeder button. This button is also used to deflate tyres. TOP NOTCH DESIGN- KARTER KTR-001 features a large 2” clear white Dial for better reading. When you hold it, it gives you very solid and great build quality feeling in hand. It is also shielded by a gear style rubber cover for proper grip and protection from drops.