Architect's pendulum lamp

The inclination of the lamp is adjusted using a screw and pendulum system. The lamp is on casters and moves easily original e40 socket, I put an e27 adapter to use commercial bulbs. Switch on the base of the lamp, everything is original and in excellent condition. Dimensions of the lamp: - diameter of the lampshade: 47cm - height of the main base: 128cm - height of the base + pendulum in max high position (without offset) / 165cm - length of the balance rod: 120cm (70cm at l rear, between counterweight and main axis and 50cm at the front between main axis and lamp head.