<ul><li>Focal length: 23.79mm. Center thickness: 4.8mm. Diameter: 13mm.</li><li>Material: H-LAF50A/H-ZF6. Coating (AR): 400-700nm. Edge thickness: 2.2mm.</li><li>Easy to attach, convenient to use,allows bright and clear image.</li><li>We is committed to pursue highest quality and offer timely customer service. We are dedicated to providing you with 100% satisfaction solution to address your any concern.</li></ul><br><br>Note:<br><br>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.

Lab Microscope Slides Diameter 13 Focal Length 23.79 Astronomical Telescope Objective Microscope Eyepiece Microscope Parts