40X 185 Biological Microscope Achromatic Objectives Lens 160/0.17 Features: - Aluminum Alloy shell is precision machined, stable and durable for long time use. - This is a 40X achromatic objective lens for biological microscope. - It can eliminate unwanted reflections and increase contrast. - Offers observation without additional chromatic aberration, making image clearer. - The length of the objective lens is 37.8mm, easy to install. Specification: - Item Type: Achromatic Objectives Lens - Material: Aluminum Alloy + Optical Lens - Color: As Pictures Show - Magnification: 40X - Tube Length: 160mm / 6.3inch - Conjugate Distance: 185 - Cover-glass Thickness: 0.17mm - Objective Lens Length: 37.8mm - Mounting Size: 20mm (Standard RMS Thread) - Item Size: 5 x 5 x 5cm / 2.0 x 2.0 x 2.0inch - Package Weight: Approx. 62g Package List: - 1 x Achromatic Objectives Lens