Abstract: The dual-globe apparatus utilizes at least one indicator on a tool. The indicator comprises an outer vessel buoyantly supported within an inner vessel. In one embodiment, the outer vessel and inner vessel comprise spheres. In another embodiment, the outer vessel and inner vessel comprise spherical segments.

Abstract: 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.

Abstract: 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.

Abstract: Ultraphosphoric acid containing a phosphorus to hydrogen ratio of greater than 1 can be prepared by bringing together in a reaction zone elemental phosphorus and a sufficient amount of oxygen in a free-oxygen containing gas to form phosphorus pentoxide, and a sufficient amount of water to form ultraphosphoric acid. The mole ratio of water to phosphorus pentoxide is maintained less than 1:1. Heat is removed from the product stream of the reaction zone to condense at least some of the ultraphosphoric acid which is then collected. In the preferred embodiment, a heat exchange fluid such as pressurized water is circulated through a cooling coil positioned to remove heat from the product stream of the reaction zone. The ultraphosphoric acid can be combined with water to provide polyphosphoric acid.