Reading Magnifier, 60mm, 10cm Focal Length, Alternate Model Capacity_3000mL a 75mm-aperture convex glass mirror

a 75mm-aperture convex glass mirror at 75mm focal length and ~2

providing a measurable stress-strain study on paired wire specimens

5-ohm reference coil non-inductively wound from constantan on a 43mm ABS-supported bobbin with three 4mm sockets

dropping into the demonstration meter as a 0-1A AC ammeter for transformer and household-current measurements

6 lb iron tension weight

Reading Magnifier, 60mm, 10cm Focal Length, Alternate Model Capacity_3000mL a 75mm-aperture convex glass mirrorDrops the focal length to 10cm on a 60mm aperture in alternate model framing, the shorter focus delivering more magnification at the cost of field of view.