The Sealey 10 Piece Digital Compression Test Kit is a professional diagnostic tool designed for testing engine compression in petrol vehicles. This comprehensive kit delivers real-time compression pressure readings through a large 2.8-inch backlit digital display, making it easy to read measurements even in low-light workshop conditions. The digital gauge offers exceptional accuracy of 0.5% FS across a working range of 0-435psi (0-30bar), with the ability to display readings in psi, bar, or kg/cm² to suit your preference. The high-resolution display shows measurements to 0.01 increments across all units, whilst the auto-power-off function helps preserve battery life during busy workshop days. This versatile compression tester includes everything needed to test most petrol engine cars and light commercials. The kit comprises four extension hoses with a generous 1150mm total length, five plug thread adaptors covering sizes from M10 to M18, and a self-sealing quick connector for secure, leak-free connections. The comprehensive range of adaptors and extension configurations ensures compatibility with various engine layouts and spark plug locations, making cylinder access straightforward even in tight engine bays. Features and Benefits: • Large 2.8-inch backlit display for clear readings in all lighting conditions • Multiple pressure unit options (psi, bar, kg/cm²) for versatile use • Five thread adaptors (M10 to M18) cover most petrol engine applications • Four extension configurations including flexible, angled, and straight options • Auto-power-off function preserves battery life • Supplied in storage case for organised tool storage and protection Specifications: Brand: Sealey Nett Weight: 1.5kg Operating Temperature: -10 to 60°C Operating Voltage: 6V Pressure units: PSI, bar, kg/cm² Accuracy: 0.5% FS Range: 0-435psi (0-30bar) Resolution: 0.01bar, 0.01kg/cm², 0.01psi Battery: AAA x4 (not included) Overload Pressure: 580psi (40bar) Hose Length: 1150mm Contents: M10 x 1, M12 x 1.25, M14 x 1.25, M16 x 1.5, M18 x 1.5mm, Straight Extension with Safety Lock, Flexible Extension with Safety Lock, Angled Extension with Rubber Stop, Straight Extension with Rubber Stop