Scientific STEM Engineering Equipment Atomic Models Set, Classroom, SKU 58001, is a United Scientific Supplies product for laboratory, educational, research, or quality-control use. The STEM Engineering Equipment Atomic Models Set, Classroom, supports routine laboratory workflows. Precision-molded for consistent performance and repeatable results. Compatible with a wide range of standard scientific setups and apparatus. Ideal for technical education, research, and quality assurance workflows. Constructed from high-grade materials resistant to common laboratory reagents. The listed specifications include dimensions of 14.5 x 11.0 x 4.0 (in), weight of 6.4 (lbs) (lbs). For purchasing records, the country of origin is listed as India. Related use terms in the row include MODELS, ATOMIC, ATOMS, ELEMENTS, MOLECULES. In equipment-based workflows, this item supports classroom demonstrations, laboratory setup, measurement, or sample processing according to the stated use. That depends on the procedure and material, but it is generally selected when engineering classrooms, demonstrations, and practical exercises where physical setup matters is part of a repeat workflow. Labs pick this version when instructional equipment that supports applied mechanics, structure, or technical measurement exercises matters more than using a broad general-purpose substitute. For equipment or apparatus purchasing, confirm the stated specifications, operating limits, and any product documentation required by the lab before use. The row does not indicate California Proposition 65 applicability. United Scientific Supplies provides applicable CPSIA/CPSC compliance resources for covered items and general compliance statements for items where GCC documentation is not required.