The consistency and reliability of laser marking means that is has become well established as the process of choice for producing graduation marks on measuring tools.
In many cases engineering professionals require a range of tools, many of which will be larger than a standard 150 mm pocket sized ruler or a micrometer. Vernier calipers up to 3 meters in length are not uncommon and some applications even require tools up to 5 meters in length. All measuring tools must fulfill certain industry standards defining admissible tolerances and with measuring units of 1/100 mm being common, these tolerances are in the micron range. Read the full article here … Rofin-Caliper Marking