Compact Blood Cell Counter can be operated with either hand, having 8 keys and 1 totalizer unit. The Blood Cell Counter is used with a microscope to count the meta-myelocytes, basophil, monocytes, lymphocytes, polycytes. The Blood Cell Counter has the keys positioned low allowing the wrist to rest on the table and registers are located above the corresponding key for continuous visibility. The Compact Blood Cell Counter is provided with a reset knob at either end to turn all the keys to zero.