A used Kumewa CH-5610 Wohlen Switzerland industrial machine lamp   

Typ B, max. 75W normal E27 bulb
230 V

With heavy base/foot

Length arm between foot and first hinge is 400mm (from rotation point to rotation point)

Length arm between first hinge and the shade is 450mm (from rotation point to rotation point)

Diameter shade is 180mm

For example original Schaublin, Aciera and Emco machine lamp

Weight 10Kg