GeoPen (Popularity: ): Brand name of geophysical instruments manufactured by Research Institute of Engineering and technology, Changchun University ... Corstor (Popularity: ): borehole core storage systems and geological equipment. MGL Scientific (Popularity: ): Scientific field equipment. Rockmans (Popularity: ): Earth science supplies for the classroom and collector. Bico Inc. (Popularity: ): Manufacturers of lab sized pulverizers, crushers, furnaces, ball mills, asphalt extractors, oil centrifuges, and other ... NSW Technology Limited (Popularity: ): Manufactures underwater electrical and electro-mechanical cables. Applications include fibre-optic telecommunication links, dynamic cables for underwater ... Contract Geological Services, Inc. (Popularity: ): Equipment for exploration geology, including lots of field equipment, and some lab equipment. "Everything but ... Estwing (Popularity: ): Manufacturer of hand-held striking and struck tools for geology and other uses (hammers, hoe-picks, chisels, ... Rite in the Rain (Popularity: ): Water-resistant field notebooks and paper. Geotechnical Instrumentation (Popularity: ): Equipment for use in the geotechnical, mining and environmental engineering fields. Products include: piezometers, inclinometers, ...