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What does MUM stand for?

MUM stands for Maximum Useful Magnification

This definition appears rarely and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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Other Resources:
We have 66 other meanings of MUM in our Acronym Attic

Samples in periodicals archive:

Experience tells me the maximum useful magnification for the best 80mm scopes is at least 60X.