platelet count determination of the total number of platelets per cubic millimeter of blood; the direct platelet count simply counts the cells using a microscope, and the indirect platelet count determines the ratio of platelets to erythrocytes on a peripheral blood smear and computes the number of platelets from the erythrocyte count.
The modern spinner device is a decorative kinetic attachment to the wheel of an automobile. The spinner covers the center of a car's wheel and is designed to independently rotate by using one or more roller bearings to isolate the spinner from the wheel, enabling it to turn while the wheel is at rest.
How to Make a Spinner. Spinners are a lot of fun to make at home or at school to kill a little time. Impress your friends by whipping one up and using it to play truth or dare or spin the bottle. You can also have contests to see who has the fastest spinner.To make a spinner, all you need is a sheet of paper and some folding skills.Read on to find out how to do it.mpress your friends by whipping one up and using it to play truth or dare or spin the bottle. You can also have contests to see who has the fastest spinner. To make a spinner, all you need is a sheet of paper and some folding skills. Read on to find out how to do it.