Rock Cycle 3D Cross-Section Model, 18 x 24" Electricity & Magnetism_Electromagnetism & Motors Hand-cranked 4-stroke gasoline engine model

Hand-cranked 4-stroke gasoline engine model at 13

Newton meter

the elongated triangular geometry handling longer ray paths for total internal reflection and beam-redirection optics

a lamp house

95A single-phase rheostat on a 300x56mm tube with cover-protected constantan winding and 4mm safety socket terminals

Rock Cycle 3D Cross-Section Model, 18 x 24" Electricity & Magnetism_Electromagnetism & Motors Hand-cranked 4-stroke gasoline engine modelThree dimensional rock cycle cross section of Earth's crust on an 18 by 24 inch display, packaged with a teacher's guide linking igneous, sedimentary, and metamorphic transformations.