balance arm
On a projected window, a side supporting arm which is constructed so that the center of gravity of the sash […]
On a projected window, a side supporting arm which is constructed so that the center of gravity of the sash […]
The use of heat on fresh paint films to speed the evaporation of thinners and to promote the reaction of
In a vertical rainwater pipe that passes through an exterior balcony, a fitting which provides an inlet for the drainage