9027.50.10.00 - Exposure meters

This category, HTS Code 9027.50.10.00, specifically encompasses "exposure meters." These are instruments designed to measure and quantify light intensity, particularly for photographic and cinematographic purposes, or for general illumination assessment. Their primary function is to determine the correct exposure settings for cameras or to evaluate ambient light levels in various environments.

Within the broader classification of instruments and apparatus using optical radiations, this subcategory is distinct from other potential subdivisions that might cover devices employing ultraviolet or infrared radiation for analytical or measuring purposes. Exposure meters are characterized by their reliance on visible light spectrum analysis to provide actionable data for exposure control, differentiating them from instruments focused on other parts of the electromagnetic spectrum for different applications.

As a leaf node within the HTS structure, HTS Code 9027.50.10.00 does not have further subcategories. Therefore, classification within this code is final for devices fitting the description of exposure meters. When classifying goods, customs officials will look for the primary function of measuring and indicating light levels for exposure determination as the key determinant for placement under this specific tariff item.