High-Current Standard Resistance Coils Subcategory_Scoops and Spatulas 8mm rod attachment and a

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

Four-socket E10 lamp holder pre-wired in series on a hard-plastic base with two 4mm banana terminals

coil for measuring the force on a current-carrying conductor and verifying the relationship between current

promoting airflow through glassware and plasticware during post-wash drying on the bench

High-Current Standard Resistance Coils Subcategory_Scoops and Spatulas 8mm rod attachment and aHeavy current 1. 5 ohm reference coil non inductively wound from constantan on a 43mm ABS supported bobbin with three 4mm sockets, rated to 8A for series resistor or potentiometer use.