The group of inventions relates to equipment for experiments and is aimed at expanding functional capabilities. A designer includes a mounting panel (1), profiles (2) and brackets (5), I-shaped or T-shaped central and side functional modules (3) and (4), and supports (6). The modules (3) and (4) can be designed to transmit electrical current and/or contain equipment components: a collar, a cell, an inclined platform, an arrester, a clamp, a compartment for installation of power supplies, a console, an indicator, a contact, an axis, a winding coil and a switch. A laboratory modular unit of the designer contains at least one central functional module (3) and/or side functional module (4), brackets (5) and a support (6).
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