Features 400 Times Magnification: The fiber optic microscope has 400 times magnification, which can quickly detect dents, scratches, pollution, etc. on FC/SC/ST fiber optic jumpers/pigtails (male). High Measurement Accuracy: The fiber optic microscope has fine focusing and high measurement accuracy. It can detect PC end faces and APC end faces. Inspection Equipment: 400 times fiber optic microscope is an essential fiber end face inspection equipment for operators and engineers in field work and laser printing plate maintenance. Stable Structure: The monocular handheld fiber optic microscope is made of selected plastic materials, with a stable structure and durable. Widely Used in Optical Communication: The optical fiber end face detector can magnify the image of the optical fiber end face more clearly, and is widely used in optical communication and other industries. Specification: Item Type: Microscope Material: Plastic LED: Rated Life 100000h Control: Instant switch, fine focusing control Safety Filter: Built-in adapter interface, use interchangeable universal or special adapter Measuring Range: Fiber Inspection Measurement Accuracy: 400 Purpose: Optical fiber interface stain and scratch detection Use Batteries: 3 x AAA Battery (Battery Not Included) Size: Approx. 225x39.5x56mm / 8.9x1.6x2.2in How to Use: 1. Open the battery cover before use and install 3 AAA battery (not included) with the positive pole facing the "light source switch"; 2. Insert the optical fiber (jumping wire) to be tested into the optical fiber interface, and the other end into the backlight window, the effect is better; 3. Look through the eyepiece and press the instant on/off indicator to switch (illuminance); 4. Adjust the focus wheel to find a clear observation point. Package List: 1 x Microscope (Battery Not Included) 1 x Manual 1 x Cloth Bag Note: 1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List 1 x Microscope (Battery Not Included) 1 x Manual 1 x Cloth Bag