Optical Linear Scale Reader Head
A compact optical sensor head for reading glass or steel linear scales in coordinate measuring systems. It provides digital position feedback essential for precision measurement and is part of optical micrometers. Classified under 9031.90.90 as a part of measuring instruments.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported with the complete measuring system
Complete measuring systems are classified under the specific instrument heading.
If the reader head is an electrical machine with independent function
Electrical machines with individual functions may fall under Chapter 85.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify as a part of a measuring instrument, not as a complete measuring device
• Provide technical specifications showing its function as a reader head for linear scales
• Verify if it contains electronic components that might affect classification under Chapter 85
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.
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.
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.