Calibrated in wavelength, rational line designation; uv excited thermal sensitive screen; 9.1/11.3 u range; 0.033 u resolution; 100 watts max, 0.001 watts focused; 0.25 second screen response time; 18 in l, 9.9 in. W, 6.5 in. H; 2.25/3.8 in. Adjustable slit; 115 vac, 60 hz; carbon dioxide laser use