Explanatory notes
… butter), ureometers (for testing urea content); these are classified in heading 70.17 . (B) THERMOMETERS, THERMOGRAPHS … etc.), floating thermometers (bath thermometers, etc.), clinical thermometers, industrial thermometers (for boilers, … (9) Pyrometers based on contraction of a solid substance (clay, for instance). These consist of an oscillating lever, …