The Dew Shield incorporates a mirror into the regular Dew Shield that enables viewing from over the sight with fully adjustable viewing angles. 

The Telrad is a favorite of amateur astronomers. This dew shield helps to prevent dew buildup on the Telrad lens. The lens shield mounts with existing screws on the Telrad finder, and can be flipped up to allow use of the Telrad, and flipped down to provide protection from dew when not in use.