The Vintage RAC Compression Tester Gauge is a classic analog tool for measuring engine compression, ranging from 0 to 270 psi. Made by the reputable brand RAC in the United States, this single item tester is a reliable and durable tool for automotive enthusiasts and mechanics looking to check engine performance. Its vintage design adds a touch of nostalgia to the modern workshop, making it a unique and practical addition to any collection of automotive tools.