Figure 1From: Quantification of the magnification and distortion effects of a pediatric flexible video-bronchoscopePhotographic Object: A square of graph paper 3 cms × 3 cms with 1 mm × 1 mm units and concentric circles of varying diameter (2 mm, 6 mm, 10 mm and 20 mm) and diameter markings (AE, BF, CG, DH) all generated by Auto CAD.Back to article page