Bead/ball counting device, has grid perforated with different rows of orifices with numerical marking on side of grid, and strip permitting to determine number of beads on grid by positioning container corresponding to chosen number

摘要

The device has a calibrated grid (2) positioned on a guide (3) and perforated with different rows of orifices (9, 9a, 9b) with a numerical marking on a side of the grid. A calibrated strip (7) permits to determine number of beads (6, 6a, 6b) on the grid by positioning a container (5) corresponding to a chosen number on the strip. A rod (4) is introduced in the guide to block the orifices for retaining the beads during counting. A brush (8) spreads the beads for filling all the orifices in upstream of the grid, and the orifices are liberated by retiring the rod to drop the beads.