DI-1000 Digital Fiber Inspection Microscope

Locknut: a threaded fastener that secures the tips in place.
Inspection Tip: a front-end component inserted to view the connector endface
Capture Button: a button that starts and stops (play or pauses) the video stream of the fiber endface to save an image at the current frame.
Focus Knob: a rotating dial that can be turned clockwise or counterclockwise to view clearer image. Make sure connector is properly seated in the adapter tip.
USB Type A output: USB connector to plug into host power source to enable operation.