I contacted Vevor before purchasing my 10" x 7" tilting angle plate concerning a review about unfinished saddle surfaces and was assured they have stringent quality controls. When it arrived I was very pleased with the way it was packaged in double boxes with the angle plate oiled and double wrapped in plastic. Top was ground, bottom appeared to be ground, degree increments were clean and concise. For the price I was very happy but I still wanted to check it out further. It was set and locked on o degrees so I placed it on my bench top mill table which was trammed in at .002 for a 7 3/8" circle. The first thing I noticed was it rocked diagonally so I flipped it over on it's top and got the same results. Next I clamped it down on the table and ran the four corners setting the first corner at 0. The remaining four corners were .005" of an inch higher (see pic). Next I noticed the the outer corners of the top saddle were not in contact with the base saddle (see Pic). Finally looking at the saddle surfaces they appear (my opinion) to have been cleaned up with a sanding disc on an angle grinder, the same for the two long sides of the top plate(see Pics). For most of what I do for $104 this will suffice, but for some more precise I wouldn't recommend it. With all that said I'm pleased enough to keep it and possible attempt to bring it in closer latter on. I've been a machinist for 40 years working at McDonnell Douglas and Boeing. Sorry two pics would not load.