| 摘要 |
An egg (8) to be examined is allowed to roll down under its own weight a plurality of planes (6) connected to each other through a plurality of steps (5) and to strike the planes (6) one by one while falling down the steps (5), whereby impact generated by the strike of the dropping egg on an impact receiving body (3) comprising the planes (6) is detected by an impact detector (12) and, from the intensity of the detected impact, a crack of the eggshell (8) is detected. The impact receiving body (3) is resiliently fixed to a base (1) through a resilient member (2). |
