9029.20.40 - Other speedometers and tachometers

This HTS category, 9029.20.40, encompasses "Other speedometers and tachometers." These are instruments designed to measure and display rotational speed (tachometers) or linear speed (speedometers) of machinery, vehicles, or other moving objects. They are distinct from the specialized speedometers and tachometers covered under headings 9014 and 9015, which typically relate to navigational or surveying instruments.

Within the broader group of revolution counters, production counters, taximeters, odometers, pedometers, speedometers, and tachometers (9029.20), this subheading specifically addresses those speedometers and tachometers that do not fall into the more specific sibling categories. For instance, it is distinguished from bicycle-specific speedometers (9029.20.20.00) and stroboscopes (9029.20.60.00), which have their own designated classifications due to their particular applications or functionalities.

The subcategories within 9029.20.40 further refine the classification based on the intended use of these instruments. The subdivision into "For use in civil aircraft" (9029.20.40.40) and "Other" (9029.20.40.80) allows for the precise categorization of these devices according to their operational environment. This distinction is crucial for applying specific tariff rates or trade regulations that may be associated with aviation components compared to general-purpose speedometers and tachometers.