4-Prong Cork-Lined Clamp with Swivel Boss Head, 4.1" Max Health & Genetics_Health & Genetics Models Used as a sensitive direction-finder

Used as a sensitive direction-finder when paired with a tangent-compass stand

and cytoplasm for classroom cell biology instruction

50mm diameter and 150mm focal length

this apparatus pairs two 8-inch polarizing filters in a wooden frame with four acrylic shapes that show photoelastic patterns when squeezed

Thirteen-piece research-grade starter kit assembling the retort stand

4-Prong Cork-Lined Clamp with Swivel Boss Head, 4.1" Max Health & Genetics_Health & Genetics Models Used as a sensitive direction-finderCork lined four prong jaws grip glassware up to 4. 1 inches while the swivel boss head delivers 360 degree angular positioning and fits rods up to 18mm in diameter.