curl --request GET \
  --url https://v1.api.flux-os.com/measurements/units/conversions/{id} \
  --header 'x-api-key: <api-key>' \
  --header 'x-user-id: <api-key>'

{
  "data": {
    "formula": "<string>",
    "id": "<string>",
    "product_category": {
      "name": "<string>",
      "id": "<string>"
    },
    "from_unit": {
      "name": "<string>",
      "abbreviation": "<string>",
      "type": "V",
      "id": "<string>",
      "html_symbol": null
    },
    "to_unit": {
      "name": "<string>",
      "abbreviation": "<string>",
      "type": "V",
      "id": "<string>",
      "html_symbol": null
    }
  }
}