Parts and accessories
Drawing, marking-out or mathematical calculating instruments (for example, drafting machines, pantographs, protractors, drawing sets, slide rules, disc calculators); instruments for measuring length, for use in the hand (for example, measuring rods and tapes, micrometers, callipers), not specified or included elsewhere in this Chapter. > Parts and accessories > Parts and accessories
Duty Rate (from China)
Subheadings
Products classified under Tariff item 9017.90.00
Caliper Case Protective Insert
Custom foam insert for protective cases of calipers and micrometers, preventing damage during transport. These inserts are molded to fit instrument profiles precisely, enhancing usability of handheld measuring tools. As accessories for measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.
Caliper Depth Gauge Probe Set
Interchangeable probe sets for depth measurement on vernier and digital calipers. Made from hardened steel for precision, they are used in automotive and aerospace inspection for accurate internal depth gauging. These are specific parts for calipers of heading 90.17.
Caliper Jaw Cleaning Brush Attachment
Retractable nylon brush attachment for cleaning caliper jaws without removing the instrument. This accessory maintains measurement accuracy by removing debris and is a hygiene accessory for precision hand tools. As an accessory for measuring instruments of heading 90.17, it is classified under tariff item 9017.90.00.
Caliper Ratchet Stop Mechanism
Replaceable ratchet and stop assemblies for consistent pressure on vernier and digital calipers. They ensure repeatable measurements in precision applications. These are dedicated parts for calipers of heading 90.17.
Calipers Digital Display Module
LCD display replacement module for electronic vernier calipers used in drafting sets. It provides a 0.001mm resolution with an absolute encoder interface, making it a specific electronic part for hand-held measuring instruments. This module falls under parts and accessories for measuring instruments of heading 90.17.
Calipers Spring Clip
A high-tension stainless spring designed to maintain jaw pressure on hand-held measuring calipers, ensuring frictionless operation. This component is essential for the proper functioning of calipers classified under heading 9017, which includes instruments for measuring length for use in the hand.
Dial Indicator Mounting Base for Micrometers
Magnetic or clamp-style mounting bases tailored for dial indicators and micrometers. They facilitate stable hand-held or bench measurements, enhancing precision in length gauging for quality control. These accessories are specific to instruments of heading 90.17.
Digital Drafting Machine Caliper Head
Precision caliper head designed as a replacement part for digital drafting machines. It features high-accuracy digital readouts for measuring lengths in technical drawing applications. This is a specific part for drafting machines classified under heading 90.17.
Digital Micrometer Replacement Jaw Set
Precision-machined replacement jaws for digital micrometers used for accurate external measurements in mechanical workshops. These parts are specifically designed to fit and function with high-precision micrometers. They are classified as parts of micrometers of heading 90.17.
Disc Calculator Gear Set
Precision brass gear set for mechanical disc calculators used in engineering computations. The 48-tooth helical gears ensure smooth logarithmic rotation for accurate calculations. These are specific parts for calculating instruments of heading 90.17.
Disc Calculator Template Wheel
A rotatable vinyl wheel with logarithmic scales, designed for disc-type mathematical calculators. This accessory is used with calculating instruments under heading 9017, which includes disc calculators for mathematical computations.
Drafting Machine Lead Clutch Mechanism
Precision lead clutch assembly for parallel ruling drafting machines. It maintains constant pencil pressure during straightedge drafting, ensuring consistent line quality. This mechanical part is specific to drafting instruments of heading 90.17.
Drafting Machine Protractor Replacement Head
An adjustable protractor head designed for parallel drafting machines, enabling precise angle marking-out in technical drawing. This is a specific accessory for drawing instruments classified under heading 9017, which includes drafting machines and protractors.
Drawing Set Compass Point
A hardened steel needle point used as a replacement for technical drawing compasses. This part is essential for marking-out instruments under heading 9017, which includes drawing sets and compasses for precision work.
Fiberglass Measuring Tape Blade
A durable fiberglass blade insert for open-reel measuring tapes, marked for length measurement up to 100m. This blade is designed for hand-held use in construction and surveying, fitting instruments for measuring length under heading 9017.
Flexible Micrometer Extension Handle
Ergonomic extension handles with ball joint for micrometers, allowing access to hard-to-reach measurements. They improve the usability of hand-held precision instruments. These are specific parts for micrometers of heading 90.17.
Fowler Micrometer Thimble Assembly
A rotating thimble and sleeve assembly replacement for outside micrometers, critical for precise linear measurements. This assembly is tailored for hand-held instruments of heading 9017, specifically micrometers used in metrology applications.
Hand Caliper Case and Holster
Custom-fitted protective cases or belt holsters for hand calipers and micrometers, preventing damage during field use. They are designed exclusively for these instruments with molded inserts. These accessories qualify under parts and accessories of heading 90.17.
Hand-Held Gauge Block Holder
Micrometer-compatible holders for gauge blocks used with measuring instruments, facilitating calibration and measurement setups. They are precision machined for minimal error. These are parts for micrometers of heading 90.17.
Measuring Rod Joint Connector
Precision connectors for assembling sectional measuring rods and tapes, allowing extension to longer lengths for surveying applications. Made of anodized aluminum for durability and weather resistance. These are parts specific to measuring instruments of heading 90.17, so they are classified under tariff item 9017.90.00.
Measuring Tape End Hook
A stamped steel zero-play hook with rivet for tape measures, ensuring accurate true-zero measurements. This accessory is designed for hand-held length instruments under heading 9017, specifically measuring tapes.
Measuring Tape Replacement Blade
Durable steel replacement blades for hand-held measuring tapes, with metric and imperial markings for construction and fieldwork. These blades are direct replacement parts that ensure continued accuracy in length measurement. As parts of measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.
Measuring Tape Retraction Spring
High-tension retraction spring for 10m drafting measuring tapes used in instrument sets. It ensures automatic rewind without tape damage, maintaining the functionality of the measuring tape. This is a specific part of hand-held measuring instruments of heading 90.17.
Micrometer Replacement Jaws for Drafting Tools
Carbide-tipped replacement jaws for micrometers integrated in hand-held drafting measuring stations. They provide sub-micron accuracy for technical drawing verification. These are specific parts for micrometers of heading 90.17.
Micrometer Standard Calibration Rods
Precision ground steel rods used to calibrate micrometers, ensuring measurement accuracy traceable to standards. These rods are essential accessories for laboratories and shops maintaining certified measuring tools. As accessories for measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.
Micrometer Standard Rod Set
Precision gauge blocks used for calibrating outside micrometers to known lengths. These calibration accessories are essential for maintaining the accuracy of hand-held measuring instruments under heading 9017.
Mitutoyo Digital Caliper Replacement Jaw Set
Precision-machined replacement jaws for digital calipers used in measuring internal and external dimensions. These parts are specifically designed for hand-held length measuring instruments under heading 9017, ensuring continued accuracy.
Pantograph Tracing Arm Assembly
Replacement tracing arm for mechanical pantographs used in architectural drafting. It is constructed from lightweight aluminum with precision joints for accurate scale reproduction. This is a specific part for pantographs of heading 90.17.
Pantograph Tracing Stylus
A tungsten carbide stylus tip for mechanical pantographs used in drafting and enlargement. This specific part is essential for drawing instruments under heading 9017, including pantographs for precise scale reproduction.
Pocket Comparator Slide Rule Template
Precision slide rule templates for pocket comparators and measuring instruments, used for quick gauging against standards. These templates are made of acrylic or steel for durability and accuracy. As accessories for measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.
Precision Micrometer Anvil Set
Interchangeable flat, spherical, and V-anvil sets for micrometers, enabling versatile measurement profiles. These anvils are made of hardened tool steel for durability and precision. As essential accessories for micrometers of heading 90.17, they are classified under tariff item 9017.90.00.
Protractor Angle Arm Extension
An extendable aluminum arm for technical protractors, allowing larger radius angle measurements. This part is designed for hand-held drawing instruments under heading 9017, specifically protractors used in technical drawing.
Protractor Angle Encoder Disc
Optical encoder disc for digital protractors used in drafting machines. The etched glass disc reads angular positions to 0.01° accuracy. This is a specific part for protractors of heading 90.17.
Slide Rule Cursor Assembly
A transparent acrylic cursor with hairline for analog slide rules used in mathematical calculations. This precision part is essential for calculating instruments under heading 9017, specifically slide rules.
Slide Rule Logarithm Scale Overlay
Adhesive logarithmic scale strips for customizing bamboo slide rules. These replacement scales are designed for mathematical calculating instruments under heading 9017, specifically slide rules.
Starrett Precision Steel Ruler Etched Scale
An etched stainless steel scale accessory for measuring rulers, providing high-contrast markings for accurate length measurement. This is designed exclusively for hand-held measuring rods under heading 9017, used in quality control.
Tape Measure Locking Mechanism Repair Kit
Complete repair kits with springs, pawls, and buttons for hand-held measuring tapes, restoring self-retracting and locking functions. These kits are specific replacement parts for measuring tapes of heading 90.17. As parts of measuring instruments, they are classified under tariff item 9017.90.00.
Vernier Caliper Depth Gauge Rod
An interchangeable stainless steel rod for vernier caliper depth measurements. This essential accessory is designed for hand-held length measuring instruments under heading 9017, specifically vernier calipers.
Vernier Caliper Extension Rod Accessory
Adjustable extension rods for vernier calipers, enabling deeper internal measurements in tight spaces. These rods are essential accessories for hand-held length measuring calipers used in engineering and machining. As accessories for measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.
Vernier Scale Reading Magnifier Lens
Clip-on magnifying lenses optimized for reading vernier scales on calipers and micrometers, with LED illumination options. These lenses enhance accuracy in low-light conditions for hand-held use. As accessories for measuring instruments of heading 90.17, they are classified under tariff item 9017.90.00.