… instruments and appliances, excluding compasses; rangefinders. …
Explanatory notes
… OR LEVELLING These are generally intended for use in the field, for example, in cartography (land or hydrographic … (1) Wind direction indicators , whether or not fitted with dials. (2) Anemometers , i.e., meteorological … The simplest type consists of a funnel of known diameter fixed to a receptacle to collect the rain which is then …