求助：奶嘴护罩上的突出物测试

pxcuag

US CPSC 16 CFR 1511.4 是奶嘴护罩上的突出物测试，对这段话不甚至理解，请大侠解释一下。
再请教一下有什么办法固定奶嘴？

原文如下：
(b) Protrusion test. Secure the pacifier by clamping the nipple with its axis horizontal. For pacifiers with hinged handles or rings the orientation of the hinge axis shall be horizontal. A plane surface shall be applied to any protrusion from the guard or shield with a force gradually attaining but not exceeding 2.0 pounds (8.9 newtons) applied in a direction along the axis of the nip-ple. The normal of the plane surface shall be maintained parallel to the axis of the nipple. Any protrusion shall be allowed to flex or rotate about its hinge as the plane surfact is applied to it. Measure the distance from the plane surface to the guard or shield at the base of the nipple.


是否有专用测试仪器，有的话，是什么仪器？
如图是 EN 1400 的类似测试参考，

pxcuag

用什么办法保证在操作过程中满足以下要求:奶头的轴线和把手的铰链线都呈水平方向,施力平面呈竖直方向?

志纤陶

夹奶嘴头的底部，最好夹子顶端与奶嘴guard有一定的接触面积，这样施加力时就不容易产生移动。