Abstract: A C-shaped channel mounted on the edge of a table or bench hingeably supports a circuit board clamping member capable of pivoting between a first inclined position in which the mounting side of the circuit board faces upwardly at an angle which enables the user readily to position electronic components in their proper location on the board and a second position in which the reverse or soldering, side of the circuit board faces upwardly in horizontal attitude thereby allowing the user quickly and accurately to solder, wire or otherwise connect the components.