Mitutoyo 378-805-3 M Plan Apo 50X Objective, NA 0.55, WD 13.0mm

Mitutoyo M Plan Apo 50X 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: 50X
• Numerical aperture: 0.55
• Working distance: 13.0 mm
• Focal length: 4 mm
• Resolving power: 0.5 µm
• Depth of focus: 0.9 µm
• Field of view (FN 24 eyepiece): 0.48 mm
• Field of view (1/2" camera): 0.10 x 0.13 mm
• Observation: Brightfield
• Mass: 290 g

Made in Japan by Mitutoyo.