Round Convex Glass Mirror, 50mm Diameter, 300mm Focal Length Lab Supplies_Scoops & Spatulas the chrome-plated metal frame and

the chrome-plated metal frame and handle keeping the reading magnifier classroom-durable

this two-wire potentiometer mounts on a metal base for stability during extended laboratory measurements

Heavier-grade wire stripper with hardened cutting jaws

and root development across successive stages for dicot germination teaching

5cm coil diameter on a 5cm closed-length helix

Round Convex Glass Mirror, 50mm Diameter, 300mm Focal Length Lab Supplies_Scoops & Spatulas the chrome-plated metal frame andConvex glass mirror at 50mm diameter and 300mm focal length, ~2mm thick, the longest focal value in the 50mm convex line giving the gentlest divergence and largest virtual image.