Designed to measure LED luminosity from the near UV to the near IR, the IL1400A portable radiometer and LED probe verifies the output of LEDs, traceable to NIST standards. The instrument provides instant readouts in lumens, candelas, watts, or watts/steridan.The probe aperture, which fits over the LED, is 6 mm in diameter. Measuring 6.5" x 1.7", the meter provides both analog and digital output and operates on four AA batteries. A 3' cable is also included. In single units, list price is $1,649. INTERNATIONAL LIGHT INC., Newburyport, MA. (978) 465-5923.