Mitutoyo 378-804-3 M Plan Apo 20X Objective, NA 0.42, WD 20.0mm

Mitutoyo M Plan Apo 20X infinity-corrected objective for brightfield observation – the standard metallurgical plan apochromat: flat, chromatic-aberration-free image across the field. Mitutoyo 378 series objectives have the world's longest working distances, giving good clearance over awkward workpiece features. Mounting thread to JIS B-7141.

• Magnification: 20X
• Numerical aperture: 0.42
• Working distance: 20.0 mm
• Focal length: 10 mm
• Resolving power: 0.7 µm
• Depth of focus: 1.6 µm
• Field of view (FN 24 eyepiece): 1.2 mm
• Field of view (1/2" camera): 0.24 x 0.32 mm
• Observation: Brightfield
• Mass: 270 g

Made in Japan by Mitutoyo.