Counting chamber, Fuchs-Rosenthal, double ruling

Item No.9161098
Counting chamber, Fuchs-Rosenthal With double ruling. Without snap-on clips. Calibratable. Cell depth 0.2mm. Grid has 16 x large 1 mm² squares. Each square is divided into 16 smaller squares each with a side length of 0.25mm and an area of 0.0625mm². These counting chambers are commonly used to coun
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