Basic Reading Magnifier, 50mm, 10cm Focal Length Subcategory_Burettes 237kg hooked masses for measuring

237kg hooked masses for measuring spring extension under load and calculating spring constants

sized for whole-class visibility during gas-law and fluid-mechanics lessons

micrometer screw

4A single-phase rheostat with cover-protected constantan winding on a 200x56mm tube and 4mm safety socket terminals

Cover-protected single-phase rheostat with constantan winding and 4mm safety socket terminals at plus-or-minus 10% nominal-value tolerance

Basic Reading Magnifier, 50mm, 10cm Focal Length Subcategory_Burettes 237kg hooked masses for measuringChrome plated 50mm reading magnifier with a 10cm focal length, the metal handle and frame giving durability for repeated student use during reading and specimen inspection.