Round Convex Glass Mirror, 50mm Diameter, 100mm Focal Length Light & Optics_Color Wood-based hydrostatic balance with two

Wood-based hydrostatic balance with two long pans and one short pan adjustable along a central column

the smaller-tube counterpart to the 300x44mm standard rheostats with the same constantan-winding construction

shipped with 100 discs and a tape roll in a clamping-plate-ready case

One-amp DC scale on a 315x115mm laminated panel with sealed shunt

Round Convex Glass Mirror, 50mm Diameter, 100mm Focal Length Light & Optics_Color Wood-based hydrostatic balance with twoConvex glass mirror at 50mm diameter and 100mm focal length, the diverging curvature widening the apparent field of view through virtual upright reduced images.