Other
Measuring or checking instruments, appliances and machines, not specified or included elsewhere in this chapter; profile projectors; parts and accessories thereof: > Other instruments, appliances and machines: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Subheadings
Products classified under HTS 9031.80.80
Torque Tester Digital
Benchtop or handheld digital device verifying torque wrench accuracy. Falls under 9031.80.80 as other measuring instrument for mechanical force.
Dial Bore Gauge
Adjustable gauge set for precise internal diameter measurement in engine cylinders and holes. HTS 9031.80.80 covers this as a mechanical checking instrument not fitting other specific categories in the chapter.
Wall Thickness Ultrasonic Gauge
Portable ultrasonic device for measuring material thickness through corrosion monitoring. Falls under 9031.80.80 as other checking instrument, not automatic or optical.
Force Gauge Digital
Handheld digital instrument measuring push/pull forces in tension/compression testing. Classified 9031.80.80 as other measuring machine not specified elsewhere.
Lux Meter Digital
Handheld photometer measuring illuminance in lux for lighting design and safety compliance. Falls under 9031.80.80 as other light measuring instrument not radiation-specific.
Sound Level Meter Type 1
Precision integrating sound level meter (Class 1) for environmental noise monitoring. HTS 9031.80.80 covers acoustic measuring instruments not automatic.
Anemometer Vane Type
Rotating vane anemometer measuring air velocity in ducts and HVAC systems. Classified 9031.80.80 as mechanical air flow measuring instrument.
Stroboscope Handheld
Portable stroboscopic light for measuring rotational speed and analyzing motion. HTS 9031.80.80 as other speed measuring instrument via optical illusion.
Surface Roughness Tester
Portable device that measures the texture and roughness of machined surfaces using a stylus probe. Classified in HTS 9031.80.80 as an other measuring instrument for surface profile checking, excluded from optical or automatic categories.
Digital Micrometer
A precision handheld tool used to measure small distances with high accuracy, typically in manufacturing quality control. It falls under HTS 9031.80.80 as a measuring instrument not specified elsewhere in Chapter 90, designed for dimensional inspection rather than optical or automatic control functions.
Thread Pitch Gauge Set
Set of thin plates with standard thread profiles for checking screw thread pitch and form. Falls under HTS 9031.80.80 as a manual checking instrument excluded from other Chapter 90 headings.
Hardness Tester Portable
Handheld rebound or ultrasonic device for non-destructive material hardness testing on-site. Classified in 9031.80.80 as other measuring instrument, not fitting automatic control or optical categories.
Coating Thickness Gauge
Magnetic or eddy current gauge for measuring paint or plating thickness on metal substrates. HTS 9031.80.80 as general measuring instrument for non-volume/length properties.
Profile Projector Screen
Replacement measuring screen with etched scales for optical profile projectors. HTS 9031.80.80 covers parts for profile projectors explicitly in the heading description.
Vibration Meter Handheld
Portable analyzer measuring vibration velocity, acceleration, and displacement on machinery. HTS 9031.80.80 for other measuring instruments monitoring mechanical properties.