An elevation plate or spacer plate is often needed when installing a weatherization fitting on inward opening windows. The thickness of the sash and the distance to the window frame can vary and an elevation plate helps to mount in a neat way. Usually there is a difference of about 5-20 mm and then you need to buy corresponding elevation plates to ensure a good installation.

Elevation washers may also be needed when installing weatherization fittings for outward opening windows. For example, when you have stucco or profiles in the window sash or window sill that do not allow you to mount the weatherization fitting where you want.

Wing-shaped knob in sand-cast brass of the type that was common as closing fittings on recessed interior windows in the 19th century. Also called vervel.

The window can be opened when the knob is in the vertical position, or locked when the knob is horizontal. Can also be used to close cabinet doors and the like. Gysinge’s own model.

Including matching screw.

Model: Lock Company No. 1310

Period after 1880

Used for all espagnolettes and window knobs 5050