AZUNO Digital Compression Tester 200 PSI Kit — Petrol Engine Cylinder Gauge with Backlit LCD & 16" Flex Hose

This compact kit equips mechanics and DIYers to measure cylinder compression quickly and accurately. Designed for gasoline engines, the set combines a high-resolution digital gauge with a flexible hose and a selection of adapters to fit common spark plug ports and specialty fittings. The gauge reads in four units, includes a bleed/vent valve for repeated measurements, and stores neatly in a rugged carry case.

How precise and repeatable are the readings?

The digital gauge delivers fine-resolution readings with consistent repeatability across the instrument's 10–200 PSI range. Readings are shown on a large backlit LCD so you can verify values in dim work areas, and the device's electronics are calibrated to minimize variance.

• High-resolution display shows decimal-level values for detailed diagnosis
• Wide 10–200 PSI range covers most petrol engine needs
• Calibration and durable sensor components for stable measurements

What adapters and connections come with the kit?

The kit includes multiple screw-in adapters to fit standard spark plug threads and a few specialty ports, plus a 16-inch flexible hose and a quick-coupler for fast hookup. This assortment lets you test typical passenger cars, small engines, and many light trucks without improvisation.

• Four threaded adapters to match common spark plug and specialty ports
• 16-inch flex hose for easy reach around engine bays
• Quick coupler for secure, leak-free connections during pressure build-up

How does the gauge make multiple tests efficient?

The gauge has an onboard bleed/vent valve so you can drain pressure between cylinders without detaching the hose. It also features an auto-off to conserve battery life, and the bright screen reduces misreads, speeding up multi-cylinder routines.

• Side-mounted bleed valve lets you reset the gauge quickly after each test
• Auto power-off extends battery life when idle
• Backlit LCD minimizes reading errors in poorly lit environments

Who is this for? If you perform routine compression checks on petrol engines—whether you are a professional technician, a mobile mechanic, or an informed car enthusiast—this AZUNO kit gives the fittings, reach, and readable digital display needed for dependable troubleshooting. It suits owners of cars, motorcycles, ATVs, and many small engines who want precise cylinder-pressure data without renting specialized shop equipment.