If you're trying to check a 3d cone as a 2d dia at a certain Z level then, yes probe diameter will affect accuracy.

如果你尝试在其中特定z值平面内用一个2维测头测量一个3d立体圆锥体。那么探针直径将会影响精度。

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Perhaps you recycle your cardboard and Coke cans, but if you're looking for a bit of inspiration from master design-recyclers check out this pendant lamp made from hundreds of soda tabs, this Cone Light made from repurposed traffic cones, and this chandelier composed almost entirely of six-pack rings.

ENGADGET: Inhabitat's Week in Green: electric cars, solar planes, and really sweet lights