Here is a cool "Surge Fencer" that looks very similar to an old wattmeter. Made circa 1943 as this item was certified for use in Wisconsin on 3-43. Notice the old wiring, use of mercury switch inside and external positive and negative insulator terminals. Made by Babson Brothers, Chicago- the same company that used the famous tiny surge pin-type glass insulators. For original mfr decal close-up [id=163708782] . The fence insulators were likely energized or stabilized by this electrical cut-out mechanism. For another photo of this cool item [id=163709492]. Rarely seen or used out West. Condition is excellent with all original parts and no noticeable damage and only minor weathering on vintage decal which is inside the glass cover! First email can add this desireable Surge go-with item to their collection for only $60 plus shipping. Thanks!