Mines a proper snap-on set up with a gauge. You can buy cheap versions that do exactly the same for around 30-40quid......but tbh you can make one also. Get an airline adaptor, a old spark plug and a peice of metal pipe. Smash the plug electrode out so you've just got a threaded part with a hole straight through. Weld the metal pipe to this then weld the airline adaptor on the end....just so you can fill the cylinder with compressed air. Set the piston at tdc on the compression stroke, leave it in gear with the handbrake on and hook up the air line to the fitted adaptor. You wont have a gauge but you can listen/look for the leaks. Oil filler cap off or dip stick out to gauge ring blow-by, ear to exhaust tail pipe to listen for a leaky ex valve, ear to inlet for inlet valve and Ive even managed to find a headgasket failure in the past by air bubble's in the header tank.