Closed Retort Ring with Stem, 3.9" ID, Plated Mild Steel Subcategory_Temperature and Heat and light-path tracing experiments across

and light-path tracing experiments across a full optics-lab class set

this insulated 4mm-stackable safety lead carries up to 12A through nickel-plated split-hollow pins for branched-circuit student work

Six 10 x 10cm unmounted plastic filter squares - red

Used to investigate force multiplication through multiple pulleys

Closed Retort Ring with Stem, 3.9" ID, Plated Mild Steel Subcategory_Temperature and Heat and light-path tracing experiments acrossClosed ring design provides continuous support on this plated mild steel retort ring, combining a 3. 9 inch inner diameter with a 5. 5 inch stem for elevated stand configurations.