Form N2A is a black and white Unsealed Test Chart. The top is black and bottom is white with overall dimensions of 5-1/2 x 10 in (140 x 254 mm). Form N2A is now available in two levels of black gloss. Form N2A-2 specifies the Leneta standard level of gloss for the unsealed black surface, typically 55 gloss units when measured with a 60° gloss meter. Form N2A-3 specifies a chart with a lower level of gloss in the black area. The gloss is typically 30 gloss units when measured with at 60°. Order either N2A-2 or N2A-3.