Picked up one of these at Harbor Freight today. $16, less the usual 20% coupon. I just wanted the gauge for a one-time test so I figured it was worth a chance. Package was sealed so I expected the usual flimsy plastic single-use crap, but was pleasantly surprised. First class gauge. A few sucks and blows (sorry ladies) and it always responded well and came back to exactly zero. Came with a good quality 2 ft hose and 5 adapters, all brass and one plastic tee. Gauge has thick rubber wrapped around for shock protection, and a very well-written manual. So now I can return the vacuum hose ($5) and package of plastic tees ($4) I bought at the auto parts place.
Dammit - I hate when Chinese made stuff works. I still hope their stock market craters.
Fuel Pump and Vacuum Tester Pittsburgh Automotive - item# 93547