Needle source Pb-210 contains 0.01 microcuries of Lead-210 in equilibrium with its daughters Bi-210 and Po-210, produces a source of both alpha and beta particles
Prism, with different angle 25 degree x 25 degree x 130 degree,Optical Borosilicate Crown glass having R.I. 1.510 App. Optically worked for use with Spectrometer, Equilateral, two facespolished 32 x 32 mm height.Dense Flint Glass Prism. R. Index 1.62, Weight (lb): 4.4, 7.9x7.5x5.1in