It consists of 2 pipettes, one for red blood corpuscles and the other for white blood corpuscles, and a Counting Chamber with double Neubauer ruling, in a case. The Counting Chamber is made from a single piece of glass with a ruling engraved directly on the glass and with wide protecting and transverse moats. Above and below the ruled area is a matte surface, which provides a mean for easy focusing. A location line facilitates immediate finding of the rulings in the microscope field without disturbing the preparation or damaging the objective by touching the cover glass.