Abstract: A spirit level (1) comprises a planar base (14) for resting, in use, on a surface whose level is to be determined, and levelling means (27) comprising a vial (41) filled with sufficient liquid that an air bubble (47) is formed within the vial (41). The spirit level (1) comprises indicia (43, 45) relative to which the bubble (47) moves as the orientation of the spirit level (1) is altered so as to indicate the orientation of the spirit level. Optical means (29) is provided on the spirit level (1) to provide an image indicative of the position of the bubble (47) relative to the indicia (43, 45).

Abstract: A spirit level comprises a planar base that functions, with the level in a first orientation, as a first level face which rests, in use, on a surface of an item whose level is to be determined. The level is further provided with leveling means comprising first and second vials each filled with a liquid to form a bubble, the longitudinal axis of the first vial being substantially parallel to the plane of the planar base, the longitudinal axis of the second vial being substantially perpendicular to the longitudinal axis of the first vial. Optical means are provided to provide an image of one of the vials such that the level of the surface can be determined about two axes, with the planar base resting on the surface of the item whose level is to be determined.

Abstract: A spirit level (1) comprises a planar base (14) for resting, in use, on a surface whose level is to be determined, and levelling means (27) comprising a vial (41) filled with sufficient liquid that an air bubble (47) is formed within the vial (41). The spirit level (1) comprises indicia (43, 45) relative to which the bubble (47) moves as the orientation of the spirit level (1) is altered so as to indicate the orientation of the spirit level. Optical means (29) is provided on the spirit level (1) to provide an image indicative of the position of the bubble (47) relative to the indicia (43, 45).

Abstract: A work bench module, (A, B, C, D) comprises a planar work surface (11), a storage (7, 9) space being defined in the module (A, B, C, D) below the work surface, equipment mounting means (15) being provided on which a piece of equipment (13, 19, 20) can be mounted in use, the equipment mounting means being itself mounted on the module (A, B, C, D) so as to be moveable from a retracted position in which the piece of equipment is stored in the storage cavity to an operative position in which the piece of equipment can be accessed from the exterior of the module (A, B, C, D). A work bench assembly comprising a plurality of work bench modules is also provided.