… or geophysical instruments and appliances, excluding compasses; rangefinders. …
Explanatory notes
… or not graduated (of metal, wood, etc.), levelling staves (self‑reading, telescopic, folding, etc.), electromagnetic … operation generally being done continuously and without separate calculation. (3) Co‑ordinatographs of the type … types, etc.). (4) Sunshine recorders (glass sphere, sensitised paper types, etc.). (5) Nephoscopes , for …