Micron Locater Grids

These grids are found to be very useful for AHERA studies.
Clean and sharp lines. Index l is 75 mesh for the strong bars and each square is bisected in both directions with thinner bars.

Asbestos Reference Index Grid

200 mesh (AHERA) with alphanumeric coding
Mesh: 200
Pitch: 125 microns
Hole: 100 microns
Bar Width: 25 microns
Transmission: 65%