Feature: Industrial Microscope Camera C-Mount Lens 1-3/4 inch (42mm) Mounting Thread Doubles total magnification power of your microscope and reduces focus length Additional accessory that increases working distance or magnification of the microscope Provides clear images; suitable for optical monocular lenses with 42mm threaded interfaces Suitable for video microscopy 0.3X reduction objective lens to increase working distance Auxiliary large objective lenses such as 0.3X are compatible with 10A monocular video microscopes Magnification Power: 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) Note: Product may be subject to updates and slight variations in appearance or color. Please consider this before ordering if specific color or appearance is required Material: Metal Color: Black Package Contents: 1 x Monocular Lens Note: Other items not included. Light reflection and display differences may cause slight color variation between image and actual product. Measurement error allowed: +/- 1-3 cm