This repo contains a small script that extracts units from the units.html file (found on http://vocab.nerc.ac.uk/collection/P06/current/) and converts a selected few (defined at the top of main.py) into a sparql query. This query has been added to the app-shmdoc-osoc-poc repo, which is read into the database using the migrations service.
When you want more units, you can add the ones you want to the supported_units list in main.py. Be carefull, because sparql queries have a maximum length, which you can reach quite easily. It is also possible to generate a query to add all the units from the units.html file, but this query is of course way too long.
Once you've created a query for units, you can add it to app-shmdoc-osoc-poc/config/migrations, so the migration service can add them. Here again a warning: Be sure to check your query is not to long.