An indicia reading terminal comprising: a memory; an image sensor having a plurality of pixels formed in a plurality of rows and columns of pixels, wherein said indicia reading terminal has a field of view; an imaging lens focusing an image of an article within said field of view onto said image sensor; a light generating assembly projecting a pair of light formations (20, 22) onto said article for determining dimension information of said article, said pair of light formations (20, 22) being projected onto said article within said field of view of said indicia reading terminal; set-up data recorded in said memory and comprising a distance, d n, corresponding to a distance on the article between the light formations (20, 22); wherein said indicia reading terminal is operable in a spatial measurement mode of operation in which said indicia reading terminal determines at least one of a width, length or height dimension of said article; wherein said indicia reading terminal, when operating in said spatial measurement mode of operation, processes a frame of image data including a representation of said article and determines respective pixel positions for a representation of each of said light formations (20, 22) and additional pixel positions representing a pair of opposite edges of said article; and wherein said pixel positions each comprise one of said rows and columns and are expressed as (x1, y1); wherein said indicia reading terminal is configured to (i) determine p n as a pixel distance between said respective pixel positions representing said light formations (20, 22), (ii) determine P n as a pixel distance between said representations of edges of said article, and (iii) calculate a surface dimension of said article from the determined values of d n, p n, and P n. a memory; an image sensor having a plurality of pixels formed in a plurality of rows and columns of pixels, wherein said indicia reading terminal has a field of view; an imaging lens focusing an image of an article within said field of view onto said image sensor; a light generating assembly projecting a pair of light formations (20, 22) onto said article for determining dimension information of said article, said pair of light formations (20, 22) being projected onto said article within said field of view of said indicia reading terminal; set-up data recorded in said memory and comprising a distance, d n, corresponding to a distance on the article between the light formations (20, 22); wherein said indicia reading terminal is operable in a spatial measurement mode of operation in which said indicia reading terminal determines at least one of a width, length or height dimension of said article; wherein said indicia reading terminal, when operating in said spatial measurement mode of operation, processes a frame of image data including a representation of said article and determines respective pixel positions for a representation of each of said light formations (20, 22) and additional pixel positions representing a pair of opposite edges of said article; and wherein said pixel positions each comprise one of said rows and columns and are expressed as (x1, y1); wherein said indicia reading terminal is configured to (i) determine p n as a pixel distance between said respective pixel positions representing said light formations (20, 22), (ii) determine P n as a pixel distance between said representations of edges of said article, and (iii) calculate a surface dimension of said article from the determined values of d n, p n, and P n.