Data: Size 915mm x 1220mm (36 x 48); QA-4 conforms to US MIL-M9868D; designated for 16x, 24x, and 30x reduction. 13 NBS 1010A / ISO Test Chart #2 targets (see T-10); reduction lines; 6% and 50% density patches. Includes set of ST-41 patches. Notes: Ideal for large graphic & reduction camera systems. Also available in metric form AO, A1, A2 (QA-4M) and US MIL-M9868E (QA-4E) formats.