Made for best accuracy alignment, the coating delivers outstanding abrasion, scratch and chemical resistance. Manufactured from premium acrylic material, high definition, clear lines, easy to use. Crystal clear transparency, easy to read, suitable for tonearm VTA balance and azimuth adjustment ruler. With the size of 67 x 48 x 8mm, small in size, practical and convenient to use. The cartridge angle balance can be adjusted and the balance level can be measured.