mlbucklew

All Activity

• 

  mlbucklew posted a question about National Optical 131 Monocular Microscope:

  "After focusing it drifts out of focus. The knobs do not stay in the same place"

  • mlbucklew
  • Over a year ago
  • Go to question page »
• 

  mlbucklew posted a question about National Optical 138-MS Monocular Microscope:

  "the focus knobs drift"

  • mlbucklew
  • Over a year ago
  • Go to question page »