MeterToMeterTo mainly offers instruments and tools. Please confirm the product is offered by our store MeterTo when purchasing, otherwise we can't ensure the quality and after-sale service.Paint film grid device also known as 100 grid knife is used to even draw a certain size of the grid, by assessing the integrity of the inside of the coating to assessthe degree of coating on the substrate.It is mainly used for the determination of adhesion of paint, not only for the laboratory, but also for a variety of conditions under the construction site.How to Select Cutter:1 mm cutter: 0-60 µm2 mm cutter: 61-120 µm3 mm cutter: 121-250 µm