An adjustment mechanism, including a first, second and third element pivotally connected to each other in series; locking means to lock the respective elements in a selected position relative to each other; and a pushbutton actuating mechanism that releases the locking means such that the elements are independently pivotal with respect to each other and release of the pushbutton actuating mechanisms re-engages the locking means.

A portable plans table configured to be used with a utility cart. The table top can be a non-fold table top, a mono-fold table top, or bi-fold table top that is large enough to support building plans, blueprints and the like. Each table top comprises leg members. The leg members can be panel leg members, a rotatable leg assembly, separate legs, or tubular folding legs. The embodiments of the plans table comprise various combinations of the different table tops and leg members. Each plans table embodiment can easily fold and be carried from one site to another.

A portable plans table configured to be used with a utility cart. The table top can be a non-fold table top, a mono-fold table top, or bi-fold table top that is large enough to support building plans, blueprints and the like. Each table top comprises leg members. The leg members can be panel leg members, a rotatable leg assembly, separate legs, or tubular folding legs. The embodiments of the plans table comprise various combinations of the different table tops and leg members. Each plans table embodiment can easily fold and be carried from one site to another.

A portable plans table configured to be used with a utility cart. The table top can be a non-fold table top, a mono-fold table top, or bi-fold table top that is large enough to support building plans, blueprints and the like. Each table top comprises leg members. The leg members can be panel leg members, a rotatable leg assembly, separate legs, or tubular folding legs. The embodiments of the plans table comprise various combinations of the different table tops and leg members. Each plans table embodiment can easily fold and be carried from one site to another.

A portable plans table configured to be used with a utility cart. The table top can be a non-fold table top, a mono-fold table top, or bi-fold table top that is large enough to support building plans, blueprints and the like. Each table top comprises leg members. The leg members can be panel leg members, a rotatable leg assembly, separate legs, or tubular folding legs. The embodiments of the plans table comprise various combinations of the different table tops and leg members. Each plans table embodiment can easily fold and be carried from one site to another.

This invention relates to a tilt board (1, 51, 61, 101) comprising an activity surface (3) supported by a base (5). The base comprises a front wall (7) and a rear wall (9) that extends downwardly from the activity surface by a greater distance than the front wall. The activity surface (3) comprises an activity surface surround (15) defining an aperture (17) therein and a removable activity surface insert (19) dimensioned for reception in the aperture. A plurality of interchangeable activity surface inserts (19) may be provided. The activity surface inserts (19) are also tilt adjustable relative to the remainder of the tilt board. The tilt board (1, 51, 61, 101) is provided with a circumferential flange so that the tilt board may be inserted into an aperture of a larger work surface such as a table if desired. The tilt board can be used for a range of activities, can lie flat in a larger work surface if desired, and the tilt angle can be adjusted to several angles which is highly advantageous.