Round Convex Glass Mirror, 75mm Diameter, 150mm Focal Length archive-pending sized for heavier-gauge electronics work

sized for heavier-gauge electronics work and laboratory wiring where the 25W iron heats too slowly to flow solder

cord-adjustable from the top and off-center positionable for oscillation investigations

and a movable disc plug

sized as a load that visibly spins when current flows in the circuit

this holder keeps light shaping consistent across diffraction

Round Convex Glass Mirror, 75mm Diameter, 150mm Focal Length archive-pending sized for heavier-gauge electronics workPairs a 75mm aperture with a 150mm focal length on a convex glass surface, ~3. 3mm thick, the gentler curvature softening divergence while still producing reduced virtual reflections.