Gilder Finder Grid

Each of the 60 square grids is identified using a base two binary numbering system.

The six binary number symbols appear on the bottom grid bars along the horizontal axis.
Zero is represented by a short pillar and one by a longer pillar.
The enlarged section shown is of grid square no. 9 – a long pillar at the extreme right represents decimal 1 and a long pillar fourth from the right represents decimal 8.

Mesh: 200
Pitch: 125 microns
Hole: 115-105 microns
Bar Width: 10-20 microns