Plain End Single Cone Adapter, 14/23, 5 inch Shank, Borosilicate Glass Ends_Button ground polished edges and optically

ground polished edges and optically worked surfaces giving long-bench divergence flexibility in refraction work

13-inch diameter

this heavy-duty bosshead holds a support rod and a perpendicular rod in a rigid screw-adjustable grip

perforated at 1cm intervals along 12 axes with six moveable pins for torque and rotational-energy investigations

Glass double-concave lens at 50mm diameter and 100mm focal length

Plain End Single Cone Adapter, 14/23, 5 inch Shank, Borosilicate Glass Ends_Button ground polished edges and opticallyPlain end single cone adapter in borosilicate glass features 14 23 cone with 5 inch shaft for chemistry apparatus connections.