Class B Volumetric Flask with 10/19 Polyethylene Stopper, 5mL, White Graduations, Borosilicate Glass Subcategory_Zoology Models the broader apex producing larger

the broader apex producing larger deviation for direct comparison against the narrower wedges in the angle-series set

lunar phases

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

Plug-in 120V AC blower sized to feed a linear air track

Aluminum pendulum clamp with three screw attachments on a die-cast head clamp fitting rods up to 16mm

Class B Volumetric Flask with 10/19 Polyethylene Stopper, 5mL, White Graduations, Borosilicate Glass Subcategory_Zoology Models the broader apex producing largerClass B volumetric flask in borosilicate 3. 3 glass holds 5mL with 10 19 polyethylene stopper for small volume volumetric measurement procedures.