The surface finish for Rockwell testing must be smooth and uniform to obtain an accurate measurement. If you recognize the fact that one Rockwell point is equal to 0.002 millimeter (0.000080 inch), it is easy to understand why certain aspects of the test are important. Rockwell results typically are reported to 0.1 Rockwell point (0.000040 in.).
Pinworm inhabits the colon and rectum, feeding on Escherichia coli (E. coli) bacteria in the stool. Late at night when children are asleep, the female pinworm, which measures about the length of a staple (0.5 inch or 13 millimeters), emerges from the anus and lays her eggs on the surrounding skin.
You may not know you have a tapeworm infection until you see segments of the worm in your stools (poo). The segments will look like white grains of rice but sometimes longer sections of the worm may need to be seen by an expert to confirm diagnosis.A tapeworm infection does not always cause symptoms.ee your GP if you see what you think are segments of a tapeworm in your stools. Infection is usually diagnosed from a stool sample but further tests may be needed depending on the type of tapeworm infection. Read more about how tapeworm infections are diagnosed.