| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 9111907000 | Doc | 43.9% | CN | US | 2025-05-12 |
| 9111905000 | Doc | 1.6¢ each + 6.8%+37.5% | CN | US | 2025-05-12 |
| 8423100010 | Doc | 30.0% | CN | US | 2025-05-12 |
| 8423100030 | Doc | 30.0% | CN | US | 2025-05-12 |
| 8487900080 | Doc | 83.9% | CN | US | 2025-05-12 |
| 8487900040 | Doc | 58.9% | CN | US | 2025-05-12 |
Watch Scale
A watch scale, also known as a jeweler's scale or micro scale, is a highly sensitive instrument used for precisely measuring the mass of small objects, most commonly gemstones, precious metals, and components of watches.
Material:
Historically, watch scales were constructed with brass and steel components. Modern scales frequently incorporate stainless steel, and utilize electronic sensors. The weighing pan is often made of stainless steel or a similar non-corrosive metal. Digital models utilize LCD or LED displays.
Purpose:
The primary purpose of a watch scale is to determine the weight of items with a high degree of accuracy, typically to milligrams (mg) or even micrograms (µg). This is critical for:
- Gemstone Valuation: Determining the carat weight of diamonds and other gemstones is essential for pricing.
- Precious Metal Purity Assessment: Used in refining and assaying to verify the weight and purity of gold, silver, platinum, and other metals.
- Watch Component Weighing: Accurate measurement of tiny watch parts (balance wheels, springs, screws) is crucial during repair, assembly, and calibration.
- Pharmaceutical Research: Measuring very small samples of compounds.
- Chemical Analysis: Precise weighing for chemical reactions and formulations.
Function:
Watch scales operate on principles of force balance.
- Mechanical Scales: Traditional models use a system of levers and weights to balance the object being weighed against a known standard. The position of the weight indicator on a graduated scale indicates the mass.
- Electronic Scales: Utilize load cells that convert force into an electrical signal. This signal is then processed and displayed digitally. Electronic scales often include features like tare function (zeroing the scale with a container on it), calibration adjustments, and multiple weighing units (grams, milligrams, carats, etc.).
Usage Scenarios:
- Jewelry Workshops: Essential for gemstone setting, polishing, and appraisal.
- Watch Repair Shops: Used for disassembling, cleaning, repairing, and reassembling watches.
- Laboratories: Used in chemical and pharmaceutical research for precise sample preparation and analysis.
- Assay Offices: Used for determining the purity and weight of precious metals.
- Coin Collecting: Used for verifying the weight and authenticity of coins.
Common Types:
- Triple Beam Scales: A traditional mechanical scale with three beams and sliding weights. Offers good accuracy but requires manual operation.
- Analytical Balances: Highly precise electronic scales capable of measuring to 0.1mg or better. Often used in laboratories.
- Precision Balances: Electronic scales offering accuracy between analytical balances and standard scales, suitable for a wider range of applications.
- Pocket Scales: Small, portable electronic scales often used for weighing gemstones or other small items on the go.
- Carat Scales: Specifically designed for weighing diamonds and other gemstones, with units displayed in carats. Often have features tailored for gemstone measurement.
Based on the material, use, function, and application scenarios, “watch scale” refers to a weighing instrument, potentially a personal scale or a component used in watch manufacturing.
The following HS codes are relevant based on the provided reference material:
- 9111907000: Watch cases and parts thereof: Parts: Other: Other. This code covers parts of watches, and a scale integrated into a watch case could fall under this classification. The total tax rate is 43.9%, comprised of a 6.4% base tariff, a 7.5% additional tariff, and a 30% additional tariff effective April 2, 2025.
- 8423100010: Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight-operated counting or checking machines; weighing machine weights of all kinds; parts of weighing machinery: Personal weighing machines, including baby scales; household scales Digital electronic type. This code specifically includes personal weighing machines, which could encompass a “watch scale” if it functions as a standalone personal scale. The total tax rate is 30.0%, with an additional tariff of 30% effective April 2, 2025.
- 8423100030: Weighing machinery (excluding balances of a sensitivity of 5 cg or better), including weight-operated counting or checking machines; weighing machine weights of all kinds; parts of weighing machinery: Personal weighing machines, including baby scales; household scales Other: Of a kind suitable for carrying on the person. This code covers personal weighing machines designed to be carried on the person, potentially including a “watch scale” if it is a portable, wearable device. The total tax rate is 30.0%, with an additional tariff of 30% effective April 2, 2025.
Regarding HS codes 8423100010 and 8423100030, please note that these codes relate to weighing machinery and may require verification of the instrument's functionality as a weighing device.