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Calibration Test Gage Block Holder

A precision kinematic mount holding gage blocks under optical microscopes for calibration verification. It ensures accurate positioning during length standard comparison and is a measuring instrument accessory. Classified under 9031.90.90 as a part of measuring instruments.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
πŸ‡¨πŸ‡³ChinaFreeβ€”Free
πŸ‡²πŸ‡½MexicoFreeβ€”Free
πŸ‡ΊπŸ‡ΈUnited StatesFreeβ€”Free
πŸ‡©πŸ‡ͺGermanyFreeβ€”Free
πŸ‡―πŸ‡΅JapanFreeβ€”Free

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8302.10.00Same rate: Free

If the holder is a general-purpose base metal fitting

General base metal fittings are classified in Chapter 83.

9031.49.10Same rate: Free

If imported with the complete measuring instrument

Complete measuring instruments are classified under the specific instrument heading.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item β€” and can price the duty on it in the same conversation.

Import Tips & Compliance

β€’ Declare as a part of a measuring instrument, not as a general-purpose holder

β€’ Provide evidence of its specific design for gage block calibration

β€’ Check if the kinematic mount is considered a part of general use under Note 2 to Section XV

Related Products under Tariff item 9031.90.90

Autocollimator Objective Lens Cell

A precision cell housing objective lens assembly for autocollimator angle measuring instruments. The thermal compensation design maintains alignment stability. It is classified under 9031.90.90 as a part for other optical checking appliances.

Digital Readout Interface Cable for Metrology Instruments

A shielded cable assembly designed to connect optical encoders to digital display units in metrology instruments. It ensures noise-free signal transmission for precise measurements, qualifying as an accessory for measuring or checking appliances of Chapter 90.

Fiber Optic Light Guide Bundle for Microscopes

A flexible coherent fiber bundle that transmits illumination to measuring microscope workpieces, maintaining light intensity uniformity. It is an accessory for optical measuring instruments, enhancing their functionality under Chapter 90.

Laser Alignment Lens for Optical Micrometer

A precision-ground optical lens used in laser micrometers to focus the laser beam for measuring object dimensions with micron accuracy. This component is specifically designed as a replacement part for laser micrometers classified under tariff item 9031.41.00. It is classified under 9031.90.90 as a part or accessory of measuring instruments.

Laser Gauge Dust Shield Window

A sapphire or fused silica protective window for laser micrometer optical heads, preventing contamination while maintaining beam transmission. The anti-reflective coating ensures measurement accuracy. This product is classified as a protective part of optical measuring instruments under 9031.90.90.

Laser Micrometer Beam Splitter Prism

A specialized dichroic prism that splits laser measurement and reference beams in dual-axis optical micrometers. This component ensures measurement accuracy through precise beam separation. It is classified as a specific part of optical measuring instruments under 9031.90.90.