Class B Schellbach Borosilicate Glass Burette, White Graduations Capacity:50mL this Jolly's photometer turns the

this Jolly's photometer turns the inverse-square law into a measurable observation

6 inch 12mm steel rod into a 10 by 1

Three-quarter-inch replacement steel ball for the 2D-collision

Two-part split heart model on an integrated base separates into right and left hemispheres

providing a hands-free reflective surface for laser and ray-trace experiments

Class B Schellbach Borosilicate Glass Burette, White Graduations Capacity:50mL this Jolly's photometer turns theSuited for titrations with dark or colored titrants, the white printed graduations and Schellbach stripe preserve clean meniscus reading in teaching bench coursework.