Traveling microscope

Source: Wikipedia, the free encyclopedia.
A traveling microscope. E—eyepiece, O—objective, K—knob for focusing, V—vernier, R—rails, S—screw for fine position adjustment.

A travelling microscope is an instrument for measuring length with a

Duc de Chaulnes’ method).[2]
It is also used to measure very short distances precisely, for example the diameter of a capillary tube. This mechanical instrument has now largely been superseded by electronic- and optically based measuring devices that are both very much more accurate and considerably cheaper to produce.

Travelling microscope consists of a cast iron base with machined-Vee-top surface and is fitted with three levelling screws. A metallic carriage, clamped to a spring-loaded bar slides with its attached vernier and reading lens along an inlaid strip of metal scale. The scale is divided in half millimeters. Fine adjustments are made by means of a micrometer screw for taking accurate reading. Both vernier reading to 0.01mm or 0.02mm. Microscope tube consists of 10x Eyepice and 15mm or 50mm or 75mm objectives. The Microscope, with its rack and pinion attachment is mounted on a vertical slide, which too, runs with an attached vernier along the vertical scale. The microscope is free to rotate n vertical plane. The vertical guide bar is coupled to the horizontal carriage of the microscope. for holding objects a horizontal stage made of a milki[check spelling] conolite sheet is provided in the base.

See also

Wikimedia Commons has media related to Travelling microscopes.

References

  1. ^ [https://www.merriam-webster.com/dictionary/traveling%20microscope ....... 'Traveling microscope'], "Merriam-Webster Dictionary
  2. doi:10.1364/JOSA.58.000428
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