Sashes and frames receive their mechanisms or fittings. These include sliding mechanisms for horizontal and vertical sliding windows and the linkages and hinges for tilt and turn windows. The fittings for lift and slide doors are particularly complex. All are installed and screwed by hand. However, the window handle is only mounted after the window has been installed.
Cordless screwdriver
Cordless screwdrivers for continuous use should be light and have a balanced centre of gravity. There are big differences here!