A hinging device (10; 110) for use in a modular building construction, the hinging device comprising: (i) a first fixing component (24/66; 124/166) for securely attaching the hinging device to a first article, the first fixing component comprising an inner plate (24; 124) and an outer plate (66; 166), the outer plate comprising an aperture (68; 168) for receiving a fastener for use in securely attaching the first fixing component to a first article and the first fixing component having a substantially "L"-shaped cross-section; (ii) a second fixing component (25; 125) for securely attaching the hinging device to a second article, the second fixing component comprising a main member (20; 120) that is substantially planar and which comprises at least one leg portion (21, 23; 121, 123) unitarily formed with the main member and disposed in a plane offset from the plane of the main member, the at least one leg portion comprising an aperture (62a, 64a; 134, 136) for receiving a fastener for use in securely attaching the second fixing component to a second article; (iii) a first moveable arm (22a; 122a) pivotally coupled to the inner plate of the first fixing component; (iv) a second moveable arm (22b; 122b) pivotally coupled to the second fixing component (25; 125); (v) means (50/54/52; 132b) for pivotally coupling the first and second moveable arms to one another such that the first and second moveable arms moveably connect the first and second fixing components to one another and such that the first and second moveable arms can partially cross over one another; and (vi) at least one slot (54, 52; 152) formed in at least one of: the main member of the second fixing component, the first moveable arm, and the second moveable arm, the at least one slot controlling relative movement of the first and second moveable arms such that the second fixing component can linearly move over and beyond the first fixing component; the hinging device thereby being structured and arranged for securing the first article to the second article in a first position; for securing the first article to the second article in a second position linearly spaced from the first position; and for controlling the relative linear movement of the first and second articles between said first and second positions. (i) a first fixing component (24/66; 124/166) for securely attaching the hinging device to a first article, the first fixing component comprising an inner plate (24; 124) and an outer plate (66; 166), the outer plate comprising an aperture (68; 168) for receiving a fastener for use in securely attaching the first fixing component to a first article and the first fixing component having a substantially "L"-shaped cross-section; (ii) a second fixing component (25; 125) for securely attaching the hinging device to a second article, the second fixing component comprising a main member (20; 120) that is substantially planar and which comprises at least one leg portion (21, 23; 121, 123) unitarily formed with the main member and disposed in a plane offset from the plane of the main member, the at least one leg portion comprising an aperture (62a, 64a; 134, 136) for receiving a fastener for use in securely attaching the second fixing component to a second article; (iii) a first moveable arm (22a; 122a) pivotally coupled to the inner plate of the first fixing component; (iv) a second moveable arm (22b; 122b) pivotally coupled to the second fixing component (25; 125); (v) means (50/54/52; 132b) for pivotally coupling the first and second moveable arms to one another such that the first and second moveable arms moveably connect the first and second fixing components to one another and such that the first and second moveable arms can partially cross over one another; and (vi) at least one slot (54, 52; 152) formed in at least one of: the main member of the second fixing component, the first moveable arm, and the second moveable arm, the at least one slot controlling relative movement of the first and second moveable arms such that the second fixing component can linearly move over and beyond the first fixing component; the hinging device thereby being structured and arranged for securing the first article to the second article in a first position; for securing the first article to the second article in a second position linearly spaced from the first position; and for controlling the relative linear movement of the first and second articles between said first and second positions.