Tele Vue 2x 2" PowermateDescription With freedom from aberrations, greater magnification potential, and compact size, Powermates pick up from where Barlows can go no further. Al Nagler's 4 element concept, continues the tradition of full field sharpness with optimum aberration control. Like long eye relief? Retain the eye relief of long focal length eyepieces, while at high power. Enjoy, for example, the sharpness and comfort of the 32mm Plssl at up to 5 times the power!