Description: Mechanical, benchtop counters for determining Cell type and numbers. Use with blood cell label or insert your own. Each key records up to 999. Total window tracks total # of strokes. At 100 Counter rings.
- 6-key counter: 9 7/8 x 3 x 2¼"
- 9-key counter: 12 5/8 x 3 x 2¼"
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