Melles Griot Universal Optical Power Meter with 13PDC001 400-1100 nm Sensor. Unit powers on. Completes self-test. Buttons Good. Menu access, change and storage O.K. Display good – no LCD bleed. Meter movement good. Responds to ambient light as shown in main image. No manuals or other accessories. As shown. Purchaser will be responsible for any calibration/certification.