Glass Calibrator

Measure, mark, and etch units on side of glass tubes.
picture of Glass Calibrator

Quick Stats


Salary Range
$18,000 – $45,000

Data from U.S. Department of Labor


What do Glass Calibrators do?

Measures, marks, and etches units on side of glass tube or similar measuring devices, using calibrating device and solution of hydrofluoric acid: Fills tube with specified quantity of mercury and marks meniscus of mercury with special pen. Covers tube with wax. Positions tube in calibrating device, aligns needle guide with calibrated ruler, and turns locknut to hold guide in place so that exact measurement can be marked, starting from meniscus. Turns handwheel that moves needle in back-and-forth motion to remove wax and expose glass to be etched with acid. Realigns needle guide to next unit to be marked and continues sequence until tube is calibrated. Removes tube from calibrating device and dips it into solution of hydrofluoric acid so that acid will permanently etch area of glass not covered with wax. Rinses tube in cold water to remove excess acid and in hot water to remove wax.


Should I be a Glass Calibrator?

You should have a high school degree or higher and share these traits:
  • Levelheaded: You hold your emotions in check, even in tough situations.
  • Reliable: You can always be counted on to do a good job.
  • Detail Oriented: You pay close attention to all the little details.

  • How to become a Glass Calibrator

    Most Glass Calibrators have no higher education and get on-the-job training. Think about earning a Certificate or Master's degree to increase your competitiveness in the field. Chart?chd=s:9uaaaa&chl=no+college+%2874%25%29|certificate+%2825%25%29|||master%27s+%281%25%29|&cht=p3&chs=466x180&chxr=0,74,74
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