BOS Medicare Surgical 8 Key Differential Cell Counter is a manual laboratory counting instrument designed to assist with differential blood cell counting. It features dedicated mechanical counters for Baso, Eosin, Myelo, Juven, Stab, Seg, Lymph and Mono, along with an additional Total counter for consolidated counting. The clearly arranged mechanical number displays allow individual cell categories to be monitored during routine manual counting. Each category has its own dedicated push button, helping users maintain an organized counting workflow without relying on electronic screens or complicated controls. The counter features a sturdy housing with a stable base and side-mounted reset knobs. Its straightforward mechanical design makes it practical for pathology laboratories, hematology laboratories, medical colleges, diagnostic facilities and other healthcare or educational laboratory environments where manual differential counting is performed. This manual blood cell counter is intended as a counting aid and should be used according to the laboratory's established procedures and applicable professional protocols. It is not an automated hematology analyzer and does not replace laboratory testing, microscopy or professional interpretation.