Google Sketchup Tutorial: mirror or rotate

Google SketchUp Mirror command can not be found, whereas very useful when drawing object. Actually this command is still there, only have a bit different with other drawing software like AutoCAD. For example, if I want to mirror the object show on screenshot below with the spin axis that I mark red….. Tips: should group first or make it into element the object… that you want to mirror to avoid mistakes. Usually the object is not...