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U.S. Notes (con.) (288) Printed circuit board assemblies, of a kind designed for use in X-ray apparatus (described in statistical reporting number 9022.90.6000) (289) Tungsten shielding, containing 90% or more of tungsten, of a kind designed to be attached to the walls of the multileaf collimator of the specific radiotherapy apparatus based on the use of X-rays (described in statistical reporting number 9022.90.6000) (290) Vertical stands specially designed to support, contain or adjust the movement of X-ray digital detectors, or the X-ray tube and collimator in complete X-ray diagnostic systems (described in statistical reporting number 9022.90.6000) (291) Thermoplastic masks of polycaprolactone for the use of immobilizing patients [Compiler's note: may be "for use in immobilizing"], during the use of alpha, beta or gamma radiations, for radiography or radiotherapy (described in statistical reporting number 9022.90.9500) (292) Electromagnetic flow meter systems for pipes with outside diameters larger than 183 cm (described in statistical reporting number 9026.10.2040) (293) Digital tire pressure gauges, each valued not over $8.50 (described in statistical reporting number 9026.20.4000) (294) Carbon monoxide sensors, each having a value exceeding $14 but not exceeding $19 (described in statistical reporting number 9027.90.5910) (295) Hydrogen sulfide sensors, each having a value exceeding $9 but not exceeding $13 (described in statistical reporting number 9027.90.5910) (296) Nitrogen dioxide sensors, each having a value exceeding $12 but not exceeding $17 (described in statistical reporting number 9027.90.5910) (297) Sulfur dioxide sensors, each having a value exceeding $24 but not exceeding $29 (described in statistical reporting number 9027.90.5910) (298) Microtome universal cassette clamps (described in statistical reporting number 9027.90.5995) (299) Utility meter bases, of plastics, each 17 cm or greater but not exceeding 18 in diameter, incorporating a latching relay, the foregoing valued over $8 but not over $10 (described in statistical reporting number 9028.90.0040) (300) Waveform monitors, each valued over $4,000 but not over $5,000 (described in statistical reporting number 9030.40.0000) (301) Printed circuit board assemblies designed for use with X-ray detectors (described in statistical reporting number 9030.90.2500) (302) Oscilloscope probes (described in statistical reporting number 9030.90.8911) (303) Automatic thermostats for heating, ventilation and air conditioning systems, containing temperature and humidity sensors, designed for wall mounting (described in statistical reporting number 9032.10.0030) (304) Thermostats for air conditioning, refrigeration or heating systems, designed for use in motor vehicles (described in statistical reporting number 9032.10.0060) (305) Thermostats for air conditioning, refrigeration or heating systems, other than for wall mounting, each measuring not more than 15 cm in length, 11 cm in width, and 3 cm in height (described in statistical reporting number 9032.10.0060) (306) Battery balancers designed for regulating voltage across batteries, other than for 6, 12 or 24 volt systems (described in statistical reporting number 9032.89.4000) (307) Water level and temperature control devices of a kind used in household appliances (described in statistical reporting number 9032.89.6040) (308) Flow and liquid level control instruments, each valued not over $10 (described in statistical reporting number 9032.89.6060) Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - III - 155