115/120 VOLTAGE; UTILIZE SPHERICAL PROJECTION TO PROVIDE DIRECT REGISTRATION OF TARGET; PERMIT ACCURATE MEASUREMENT WITH BUILT-IN LIGHTMETER AND ADJUSTING OF ABSOLUTE TARGET BRIGHTNESS OF 31.5 ASB MAXIMUM AND SPHERE LUMINOSITY OF 1000 ASB MAXIMUM OF A 30 CM RADIUS PROJECTION HEMISPHERE SURFACE; PROVIDE SEPARATE ILLUMINATION OF THE LUXMETER SCALE; MEASURE BOTH KINETIC AND STATIC QUANTITATIVE PERIMETRY; CONTAIN A TELESCOPE WITH MAGNIFICATION NOT LESS 1.85X