3.05 mm diameter, 0.7 mil （18µm） thickness
Material: Copper （Cu）, Nickel （Ni）, Gold （Au）,
Copper/Palladium （Cu/Pd=CP）

· Locator Grid

· Reference/Index Grid

¹This grid has 172 complete square cells ａnd each cell is identified by an 8 bit base 2 binary number symbol representation. 0 is represented by a short rounded pillar. There is no zero cell.
The first cell located at top left is binary 1, digit 1 is represented by a long pillar at the extreme right position on the bottom horizontal line of cell one: each individual subsequent cell is then easily identified. Lines/Inch ~150.

² Thick bars dividing regions into 6 thin bar areas, which are identified by a numeric system.
³ Thick bars dividing regions into 9 thin bar areas, which are identified by alphabetical letters located in the center of the grid.
⁴ Each of the 322 grids squares, can be identified by reference to its unique combination of base 2 binary number ａnd alphabet symbol （A-T）. 0 is a short rounded solid pillar ａnd 1 is a longer rounded solid pillar.
⁵ The block of 625 （25 x 25） individual cells is divided into smaller blocks bounded by thicker crenellated bars. Each small block of 25 cells has a central alphabet letter from A to Y for identification purposes.
⁶ The block of 1152 （32 x 36） individual cells is divided into smaller blocks bounded by thicker crenellated bars. Each small block of 36 （6 x 6） cells has a central number from 1 to 32 for identification purposes.