Please see the photos.  The lens inside the tube is damaged. The eye piece itself is clear to look through.

  • This is a vintage Baker London micrometer eyepiece for a microscope, designed to measure the size of microscopic specimens.
  • It features a 7.5x magnification factor, allowing for both viewing and measurement within the same view.
  • The device includes an adjustable reticle scale, visible as the numbered markings, which is used for calibration and measurement.
  • It is a specialized optical accessory from the mid-20th century, likely used for scientific or educational purposes.