Two-spacer set for use with ASTM F2508-2023 reference materials E, F, and G in the 6-inch square size. Black spacer is for tiles E and G, white spacer is for tile F.
Two-spacer set for use with ASTM F2508-2023 reference materials E, F, and G in the 6-inch square size. Black spacer is for tiles E and G, white spacer is for tile F.