Spare 500g Iron Hooked Weight with Retractable Hook Subject_Astronomy the larger geometry pushing pole

the larger geometry pushing pole separation wide enough that field lines extend visibly beyond the magnet body for filing maps

bending measurably under heat as differential thermal expansion of the two bonded metals drives the visible curvature

Seven-junction copper-and-iron thermopile from four 130mm wires of each metal

the high-concentration AgNO3 reagent for halide-precipitation tests

Document analysis kit teaches forensic investigation through ink chromatography

Spare 500g Iron Hooked Weight with Retractable Hook Subject_Astronomy the larger geometry pushing poleCast iron 500g mass carries a retractable hook for suspension from spring scales, pulleys, or beams, serving as a replacement piece for gravitational and force measurement setups.