Fluke 1.25mm Universal Video Probe Adapter Tip for Male Ends

LC connectors have a 1.25 mm ferrule as apposed to the 2.5 mm ferrule found on SC and ST connectors. This means you cannot use any of the standard tips that come with the FiberInspector to measure LC connectors. You can use this tip:

For testing LC patch cords:
Model name: NF368
Part number: 2787780
Description: 1.25MM UNIVERSAL VIDEO PROBE ADAPTER TIP FOR MALE ENDS