Research-Grade Hands-On Physics Demonstration Optical Bench Set for Physics Work, SKU OBSET3, is a United Scientific Supplies product for laboratory, educational, research, or quality-control use. The Research-Grade Hands-On Physics Demonstration Optical Bench Set for Physics Work is built for day-to-day scientific and classroom use. Engineered for durability in demanding industrial and laboratory environments. Constructed from high-grade materials resistant to common laboratory reagents. Ideal for technical education, research, and quality assurance workflows. Precision-molded for consistent performance and repeatable results. The listed specifications include dimensions of 40.0 x 6.0 x 5.0 (in), weight of 4.8 (lbs) (lbs). For purchasing records, the country of origin is listed as India. Related use terms in the row include OPTICAL BENCH, CANDLE, METER STICK, OPTICS, LIGHT. In equipment-based workflows, this item supports classroom demonstrations, laboratory setup, measurement, or sample processing according to the stated use. Its main advantage is instructional apparatus for demonstrating measurable physical principles in a repeatable way, which makes it a better fit for STEM lessons, physics labs, and hands-on experiments that benefit from direct observation than a more generic alternative. The difference is mostly functional: Unlike general laboratory containers, this equipment is intended to illustrate force, motion, energy, or measurement concepts. For equipment or apparatus purchasing, confirm the stated specifications, operating limits, and any product documentation required by the lab before use. The row indicates California Proposition 65 applicability, so applicable warning language should remain visible where required. United Scientific Supplies provides applicable CPSIA/CPSC compliance resources for covered items and general compliance statements for items where GCC documentation is not required.