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   A toolmakers microscope    is a measuring device    that can be used to    measure up to 1/100th of    an mm.   It wo...
   It needs application of    optics too.   A light focuses on the object    and through lens we can    see the shadow o...
   TMM (toolmakers microscope) has got a robust    and strong base such that it can bear and    withstand sudden loads. ...
   Two scales are meant for measuring in X and Y    directions and the movement of table the    respective direction.   ...
   Object       to    be    measured is placed    on     glass    table,    illuminator is turned    on.   Let the objec...
Using the micrometer heads get it to a definable point as shownNote down both micrometer readings
Now turning micrometer heads we can getpositions as shown above.After setting 2nd position note down micrometerreading mea...
 Difference in micrometer reading of X  movement gives us the length of the  rectangle Similarly, the difference in micr...
The large tool maker’s microscope is suitable for the  following fields of applications; Length measurement in Cartesian ...
Toolmaker’s microscope(tmm)
Toolmaker’s microscope(tmm)
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Toolmaker’s microscope(tmm)

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a small working about tool makers micro scope

Toolmaker’s microscope(tmm)

  1. 1.  A toolmakers microscope is a measuring device that can be used to measure up to 1/100th of an mm. It works on the principle of a screw gauge, but a few changes were added to it to make its operation more easier.
  2. 2.  It needs application of optics too. A light focuses on the object and through lens we can see the shadow of the object, which resembles the object. More clear shadow would be enhance the accuracy of measurement
  3. 3.  TMM (toolmakers microscope) has got a robust and strong base such that it can bear and withstand sudden loads. A column with a track is present to carry lens, along with illuminating source in certain TMM’s. Lens has two perpendicular straight lines marked that act as reference lines. Object to be measured is placed on glass table. Glass table is provided with 3 scales on it
  4. 4.  Two scales are meant for measuring in X and Y directions and the movement of table the respective direction. The other scale is meant for measuring rotation as well as rotation of table.
  5. 5.  Object to be measured is placed on glass table, illuminator is turned on. Let the object be a rectangle. It may look as shown if seen through lens
  6. 6. Using the micrometer heads get it to a definable point as shownNote down both micrometer readings
  7. 7. Now turning micrometer heads we can getpositions as shown above.After setting 2nd position note down micrometerreading meant for X movementAfter setting 3rd position note down micrometerreading meant for Y movement
  8. 8.  Difference in micrometer reading of X movement gives us the length of the rectangle Similarly, the difference in micrometer reading of Y movement gives us the breadth of the rectangle
  9. 9. The large tool maker’s microscope is suitable for the following fields of applications; Length measurement in Cartesian and polar co- ordinates. Angle measurements of tools; threading tools punches and gauges, templates etc. Thread measurements i.e., profile major and minor diameters, height of lead, thread angle, profile position with respect to the thread axis and the shape of thread. (rounding, flattering, straightness of flanks) Comparison between centers and drawn patterns and drawing of projected profiles.

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