Raw Fossiliferous Limestone Sedimentary Rock Hand Sample, Approx 3 inch Chemistry sized for ray-box and optical-bench

sized for ray-box and optical-bench setups where filament intensity drives image visibility

1 bag diatomaceous earth (750g)

Double-side PVC dots on these knitted lab gloves add grip on palm and back for handling glassware and specimens requiring dexterity

Brass eight-piece slotted mass set totaling 1100 grams from 10 to 500 gram pieces

supplied in a wooden storage block for classroom physics and force-measurement investigations

Raw Fossiliferous Limestone Sedimentary Rock Hand Sample, Approx 3 inch Chemistry sized for ray-box and optical-benchFossiliferous limestone hand sample measures approximately 3 inches with visible shell and coral fragments for combined paleontology and sedimentary geology teaching.