Patent ID: 8627577

Claim:
An apparatus of checking dimensions of an object, the apparatus having a checking platform, characterized in that: the checking platform has a checking slot formed thereon, the checking slot extends from one side of the checking platform and arrives at another side of the checking platform, the checking slot is defined by a first side wall, a second side wall and a bottom wall, the first side wall has a front section connecting to a rear section, the front and rear sections intersect with each other at a connecting location, the second side wall has a middle section connecting to a front section and a rear section, wherein the distance between the front section of the first side wall and the front section of the second side wall is greater than that between the rear section of the first side wall and the rear section of the second side wall, and is smaller than that from the connecting location to the middle section of the second side wall, the angle of intersection between the front section of the first side wall and the rear section of the first side wall is greater than 90 degrees and smaller than 180 degrees.