Name of this instrument? similar to vernier calliper

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SUMMARY

The instrument discussed is identified as a "travelling microscope," which is similar to a vernier caliper but features a movable small magnifying glass for precise measurements. It is capable of measuring to the hundredth of a millimeter. The design is described as antique and old-fashioned, emphasizing its unique appearance compared to modern measuring tools. This instrument is particularly useful for detailed measurements in various applications.

PREREQUISITES
  • Understanding of optical measurement tools
  • Familiarity with vernier scales
  • Knowledge of precision measurement techniques
  • Basic principles of microscopy
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  • Research the specifications and uses of travelling microscopes
  • Explore the differences between travelling microscopes and micrometer screw gauges
  • Learn about the calibration methods for optical measuring instruments
  • Investigate historical applications of travelling microscopes in scientific research
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Students, researchers, and professionals in fields requiring precise measurements, such as engineering, physics, and materials science, will benefit from this discussion.

jmher0403
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I used this instrument to measure the length of a slit.

It was similar to vernier calliper but it looks like a microscope and had movable small magnifying glass to determine the line that perfectly matches up with the measured value.

It measured to hundreth of a millimeter...

does anyone know what this is called?

It looked quite antique old fashioned looking, by the way.
 
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micrometer screw gauge
 
um it looks like a microscope, not micrometer
 
I think it is a "travelling microscope"
The small magnifier is for reading the vernier scale.
 
yep that's the one thank you so much ;)
 

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