8423.90 - Weighing machine weights of all kinds; parts of weighing machinery:

Category 8423.90 encompasses weighing machine weights of all kinds, as well as parts of weighing machinery. This includes individual weights used to calibrate or operate scales, regardless of their material or design. It also covers components that, when assembled, form part of a weighing machine, but are not complete machines themselves.

This category is distinct from its siblings, specifically 8423.10, 8423.20, and 8423.30, which classify complete weighing machines and their specific functions (personal, continuous weighing, and predetermined weight discharge, respectively). While siblings describe the *operational* weighing machines, 8423.90 focuses solely on the *components* and *weights* that are either integral to or used in conjunction with these machines.

The subcategories within 8423.90 further delineate these parts and weights. 8423.90.10.00 specifically addresses parts for weighing machinery that utilize electronic means for weight gauging, with an exclusion for parts of motor vehicle weighing machines. This highlights a technological distinction within the "parts" classification. The residual category, 8423.90.90.00, covers all other remaining weighing machine weights and parts not otherwise specified, such as mechanical components or weights not fitting the electronic criteria of the preceding subdivision.