Combining the CSM1-2 optical power meter and CSS1-MM Dual LED light source, the CKM-2 is a cost-effective test kit designed for performing insertion loss measurements on multimode fiber optic links. Learn More Fiber Testing Equipment AFL Contractor Series Fiber Test Kits Optical Loss Test Kits OWL Fiber Test Kits Ideal FiberMaster Visual Fault Finders LED and Laser Light Sources Fiber Optic Inspection Scopes Fluke Networks MultiFiber Pro Fiber Optic OTDR Fluke Networks SimpliFiber Fiber QuickMap Fluke Networks Fiber Inspector Mini Fiber Talk Sets Optical Fiber Identifier