6" Cast Iron Closed Ring with Boss Head Clamp Base Size_6 x 4" and narrow — at 10

and narrow — at 10 inches tall

fabricated from glass tubing 6 mm bore

Two-cylinder brass fluid-pressure apparatus with 19mm and 38mm leather-packed pistons connected by a brass tube

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

Six-piece 3-inch optical lens set combining three double-convex and three double-concave glass lenses at 200mm

6" Cast Iron Closed Ring with Boss Head Clamp Base Size_6 x 4" and narrow — at 10Cast iron closed ring clamp with an integrated boss head, combining an approximate 5. 5 inch inner diameter with a rod grip up to 5 8 inch for large vessel support above heat sources.