Feature: Industrial Microscope Camera C-Mount Lens 1-3/4 inch (42 mm) mounting thread Increases total magnification and reduces focus length Additional accessory to increase working distance or magnification Provides clear images; compatible with optical monocular lenses featuring 42 mm threaded interfaces Suitable for video microscopy 0.3X reduction objective lens to increase working distance Compatible with 10A monocular video microscopes Magnification: 0.3X Objective magnification range: 0.7X – 4.5X (approximately 10X – 180X on display; with 0.3X Barlow lens: approximately 2.45X – 360X on display) Material: Metal Color: Black Package Contents: 1 x monocular lens Note: Light reflection and display differences may cause slight color variation between image and actual product. Measurement tolerance: ±1–3 cm.