6" Cast Iron Closed Ring with Boss Head Clamp Base Size_6 x 4" Round convex glass mirror for

Round convex glass mirror for physics optics experiments in reflection

Twelve 50 x 25mm metal strips - each stamped with a key letter for blind-test identification - cover the standard set of metals used in magnetic-property classification labs

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

fabricated from glass tubing 6 mm bore

Wider-apex 30° x 75° x 75° glass wedge prism

6" Cast Iron Closed Ring with Boss Head Clamp Base Size_6 x 4" Round convex glass mirror forCast 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.