| 摘要 |
The dual-globe level comprises at least one indicator located on a body. The body defines front and rear faces, a pair of opposing ends, and at least one longitudinal surface. The at least one indicator comprises an inner vessel located within an outer vessel, and more preferably, a substantially spherical inner globe located within an outer globe and buoyantly supported within the outer globe. The inner globe, viewable through the outer globe and defining an equator around its outer periphery, is buoyantly biased within to maintain the equator in a substantially horizontal position. The equator is in operable registry relation with a first indicia to indicate a position of the at least one longitudinal surface of the body in relation to a surface or line in question located adjacent thereto. The inner globe also includes a polar marking concentrically centered within the outer periphery of the upper hemisphere defined by the equator, with the marking in operable registry relation with the first indicia to indicate a position of the rear face of the body in relation to a surface in question located adjacent thereto. In other embodiments, marking is in operable registry relation with a second indicia to indicate a position of the front face of the body in relation to the surface in question located adjacent thereto. |
