Find HS Code and trade information for brass caliper

Brass Caliper

A brass caliper is a precision measuring instrument used to accurately determine the linear dimensions of objects. Its core component is the use of brass in its construction, offering a balance of durability, machinability, and resistance to corrosion.

Material

The primary material is brass, typically a copper-zinc alloy. Brass is favored due to:

• Machinability: Brass is relatively easy to machine, allowing for the creation of precise components.
• Corrosion Resistance: Offers good resistance to corrosion, particularly compared to steel, making it suitable for use in various environments.
• Non-Magnetic: Brass is non-magnetic, which is crucial in applications where magnetic interference is a concern.
• Appearance: Brass provides a visually appealing finish.

Purpose

The primary purpose of a brass caliper is to measure:

• Internal Dimensions: Using the internal jaws to measure the inside diameter of holes, pipes, and other internal features.
• External Dimensions: Utilizing the external jaws to measure the outside diameter or width of objects.
• Depth: Employing the depth probe to measure the depth of holes, recesses, and steps.
• Step Measurements: Accurately determining the height or distance between steps on an object.

Function

Brass calipers function based on the principle of accurate jaw positioning and a graduated scale.

• Jaws: Two primary jaws (external and internal) move along a fixed scale.
• Scale: A graduated scale (typically in inches and/or millimeters) indicates the dimension being measured. Vernier scales are often incorporated for increased precision.
• Locking Mechanism: A locking screw allows the jaws to be fixed in place once the desired measurement is achieved.
• Slider: A slider moves along the main scale, allowing for precise adjustments and readings.

Usage Scenarios

Brass calipers are commonly used in:

• Engineering: Precision measurements for manufacturing, quality control, and design verification.
• Machining: Setting tool offsets, checking part dimensions, and ensuring accuracy.
• Woodworking: Measuring the dimensions of wood pieces, checking joinery, and verifying designs.
• Metalworking: Measuring stock materials, checking finished parts, and ensuring tolerances.
• Jewelry Making: Precise measurements for gemstones, metal components, and finished jewelry.
• DIY Projects: Various home improvement and crafting applications requiring accurate measurements.

Common Types

• Outside Calipers: Designed for measuring external dimensions.
• Inside Calipers: Specifically for measuring internal dimensions.
• Vernier Calipers: Feature a vernier scale for increased precision (typically to 0.02mm or 0.001 inch).
• Digital Calipers: Utilize a digital display for easy and accurate readings. While many digital calipers use stainless steel, brass components may be present in some models.
• Dial Calipers: Employ a dial indicator for reading measurements. Similar to digital calipers, brass components may be used.

Commodity Classification for Brass Caliper

Based on the provided information, the following HS codes are relevant to a brass caliper:

• 9017.30.40.00: This HS code falls under Chapter 90, which covers “Instruments and apparatus which measure or check length, width, height or depth.” Specifically, it covers “Drawing, marking-out or mathematical calculating instruments; instruments for measuring length, for use in the hand; parts and accessories thereof.” The subheading .30 refers to “Micrometers, calipers and gauges,” and .40 specifically denotes “Micrometers and calipers.” This code applies to brass calipers used for precise measurement. The total tax rate is 60.8%, comprised of a 5.8% base tariff, a 25.0% additional tariff, and a 30% additional tariff effective April 2, 2025.

• 9017.30.80.00: Also within Chapter 90, this HS code covers “Drawing, marking-out or mathematical calculating instruments; instruments for measuring length, for use in the hand; parts and accessories thereof.” The subheading .30 refers to “Micrometers, calipers and gauges,” but .80 covers “Other” types within this category. This code could apply to brass calipers that don't fall specifically into the .40 category (e.g., specialized designs). The total tax rate is 58.9%, comprised of a 3.9% base tariff, a 25.0% additional tariff, and a 30% additional tariff effective April 2, 2025.

It is important to note that the applicable HS code will depend on the specific design and function of the brass caliper.