I hear a lot of people are getting testers that give false readings, can someone post a link to the correct size gauges I need? I'm trying to use ashcroft's site on my work computer, but this P.O.S. wont open the damn page.
Sorry to necro a thread, but just in case anyone cares that above McMaster part number is the gauge with the threads on the back. If you change the part number so it ends in 1, it's the style with the threads on the bottom, like the picture below.