I use a height gauge scriber to make height gauge scribers. This seems to be the easiest and least expensive method.
https://www.mscdirect.com/browse/tnpla/06429021?cid=ppc-google-New+-+Measuring+&+Inspecting+-+PLA_seNxl8BQ5___164110844316_c_S&mkwid=seNxl8BQ5|dc&pcrid=164110844316&rd=k&product_id=06429021&gclid=EAIaIQobChMIta7lpaGv3gIV3UsNCh374AXmEAQYAiABEgLeufD_BwE
https://www.mscdirect.com/browse/tnpla/06429021?cid=ppc-google-New+-+Measuring+&+Inspecting+-+PLA_seNxl8BQ5___164110844316_c_S&mkwid=seNxl8BQ5|dc&pcrid=164110844316&rd=k&product_id=06429021&gclid=EAIaIQobChMIta7lpaGv3gIV3UsNCh374AXmEAQYAiABEgLeufD_BwE