Lens Holder for 50mm Lens with 8mm Rod Attachment Item Type_Labware Vernier reading to 6 arcminutes

Vernier reading to 6 arcminutes on a 0-360 degree scale lets the rotatable analyzer measure optical rotation through the 20cm sample tube of this Laurent half-shade polarimeter

Designed for science experiments but can also be used in heaters and electrical appliances

used to demonstrate standing waves in air through powder-pile node spacing measurements

pairing a 2-inch plastic wheel with a metal bearing for smooth

Pack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating

Lens Holder for 50mm Lens with 8mm Rod Attachment Item Type_Labware Vernier reading to 6 arcminutes8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical bench rail for repeatable refraction, focal length, and image formation experiments.