A method of calibrating a barcode scanning tunnel, said method comprising: e. providing a scanning tunnel having i. a moveable transport surface, ii. at least one dimensioning device for determining at least one dimension of an object on the transport surface, said dimensioning device having an orientation, iii. at least one camera having an orientation wherein the at least one camera receives from the dimensioning device notice of presence of an object on the movable transport surface and dimension data for the object, and wherein the at least one camera focuses the camera optics and acquires an image of the object in response to the notice and the dimension data; and iv. at least one calibration object having at least one indicia disposed in a predetermined relationship (386, 388) to one or more features (382, 384) of said at least one calibration object; f. capturing at least one image of said at least one calibration object by said at least one camera; g. electronically detecting said at least one indicia of said at least one calibration objection and said one or more object features (382,284); h. electronically calculating at least one component of said at least one camera orientation with respect to said moveable transport surface in response to information obtained from said image and said at least one indicia of said at least one calibration object. e. providing a scanning tunnel having i. a moveable transport surface, ii. at least one dimensioning device for determining at least one dimension of an object on the transport surface, said dimensioning device having an orientation, iii. at least one camera having an orientation wherein the at least one camera receives from the dimensioning device notice of presence of an object on the movable transport surface and dimension data for the object, and wherein the at least one camera focuses the camera optics and acquires an image of the object in response to the notice and the dimension data; and iv. at least one calibration object having at least one indicia disposed in a predetermined relationship (386, 388) to one or more features (382, 384) of said at least one calibration object; i. a moveable transport surface, ii. at least one dimensioning device for determining at least one dimension of an object on the transport surface, said dimensioning device having an orientation, iii. at least one camera having an orientation wherein the at least one camera receives from the dimensioning device notice of presence of an object on the movable transport surface and dimension data for the object, and wherein the at least one camera focuses the camera optics and acquires an image of the object in response to the notice and the dimension data; and iv. at least one calibration object having at least one indicia disposed in a predetermined relationship (386, 388) to one or more features (382, 384) of said at least one calibration object; f. capturing at least one image of said at least one calibration object by said at least one camera; g. electronically detecting said at least one indicia of said at least one calibration objection and said one or more object features (382,284); h. electronically calculating at least one component of said at least one camera orientation with respect to said moveable transport surface in response to information obtained from said image and said at least one indicia of said at least one calibration object.