Optical Encoder Disk for Spectrometer
Chrome-on-glass encoder disks with 3600 lines/mm resolution for grating position feedback in scanning spectrophotometers (9027.30). Provides sub-arcsecond wavelength accuracy. Essential optical positioning component under 9027.90.64.00.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general contact lenses or optical encoders
Encoder function separate from spectroscopic grating positioning.
If marketed for general precision measuring machines
End-use specificity determines instrument vs general measurement classification.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide line pitch uniformity and chrome thickness metrology reports
• Document compatibility with specific grating drive mechanisms
• Specify environmental tolerances (temperature, humidity) for analytical use
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