Profile Projector Protractor Screen Attachment
Angular measurement protractor overlay that attaches to profile projector screens for direct angle readings from magnified projections. Specifically engineered for 9031.80.40 shadowgraph screens. Falls under HTS 9031.90.70.00 as a dedicated accessory.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If standalone drafting protractors
General mathematical drawing instruments under 9017.
If basic plastic angle gauges
Plain plastic articles without machine use under Chapter 39.
If general revolution/counter accessories
Universal angular measuring accessories under 9029 parts.
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 installation photos/manuals showing screen-specific mounting
• Avoid generic protractor classification by specifying projection scale integration
• Declare magnification range compatibility explicitly
Related Products under HTS 9031.90.70.00
Optical Comparator Worktable Clamp Set
Precision machined clamps and holders for securing workpieces on the stage of optical comparators (9031.80.40). These allow stable positioning for accurate profile and dimension projection measurements. Classified under 9031.90.70.00 as accessories principally used with these specific inspection projectors.
Shadowgraph Screen Calibration Reticle
Precision etched glass reticle mounted on the projection screen of shadowgraphs (profile projectors under 9031.80.40) for scale calibration and accuracy verification. Essential for maintaining measurement traceability in metrology labs. Classified as a part under HTS 9031.90.70.00.
Comparator Stage Precision Leveling Screws
Micrometer-adjustable leveling screws for optical comparator workstages, providing sub-micron height adjustments for perfect part alignment. Exclusive to 9031.80.40 profile projectors. Classified under 9031.90.70.00 machine parts.
Profile Projector Dust Cover and Storage Case
Custom-fitted protective cover and transit case designed specifically for profile projectors of 9031.80.40, with foam cutouts for optics and stage protection. Prevents contamination of precision optical surfaces. Classifies as accessory under HTS 9031.90.70.00.
Shadowgraph Objective Lens Cleaning Kit
Specialized cleaning kit with lint-free wipes, precision swabs, and optical cleaning solution formulated for shadowgraph objective lenses in 9031.80.40 profile projectors. Prevents scratches on high-magnification optics. Dedicated accessory under 9031.90.70.00.
Profile Projector USB Data Output Cable
Custom-length USB interface cable with proprietary connectors for digital profile projectors (9031.80.40) to connect with PC-based measurement software. Enables digital dimension export and SPC data collection. Classifies as dedicated accessory under 9031.90.70.00.