Isometric Grid Pad 8.5" x 11" by Alvin Alva-Line
Printed in a non-reproducible blue ink on Alva-Line blue-white quality tracing paper the isometric grids are clear sharp and accurate yet won’t reproduce on Diazo prints. All grids are printed on the underside of sheets to prevent removal during erasure. These medium weight 16 lb. basis .00275 thickness pads are ideal for use by engineers draftsmen architects graphic artists etc. 50-sheet pads. 8.5" x 11".