Sourcing optical theodolites from China

Duty and theodolite classification

Heading 9015 covers surveying and related instruments. Optical theodolites fall within 9015 20 00 00, the line for theodolites and tachymeters. The table also includes parts and companion surveying instruments; those rows are not alternative codes for a complete optical theodolite.

Read from the UK Trade Tariff on 30 October 2026, the listed lines carry 0% duty for goods from China, with no anti-dumping or countervailing measure or suspension recorded. The tariff attaches a DCMS Export Licence control. Official guidance states that importing objects of cultural interest into Great Britain has no licensing requirement. Ask your customs broker to confirm how the tariff control applies to your shipment, particularly for antique instruments.

Confirm the complete instrument and separately shipped accessories using finding your commodity code. For companion instruments within the wider heading, see optical automatic levels.

Specify optical angle measurement

State that the order is for an optical theodolite with optical circle readings. Agree angular accuracy, scale graduation and reading method, telescope magnification, image orientation, focusing range and optical plummet. Specify the tribrach, tripod connection, carrying case and included adjustment tools. Approve a sample whose horizontal and vertical readings can be checked against a known reference.

Suppliers must supply safe work equipment, including new and second-hand equipment, with adequate information for safe use and maintenance. Request instructions covering mounting, adjustment, handling and storage. Agree serial-specific calibration results, the acceptance method and what happens if the instrument fails after transport.

Worked duty example

Illustrative example, not a quote: 50 optical theodolites, illustrative only under 9015 20 00 00, invoiced at £8,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £10,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £10,000, so it is £2,000. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Angle readings: compare horizontal and vertical readings against a known reference, repeat observations with the telescope reversed, and check repeatability against the agreed accuracy.

Optics: check reticle sharpness, focusing, parallax adjustment, circle readability and optical plummet alignment; inspect lenses for haze, scratches and loose components.

Mechanics: check clamps, tangent screws, levelling screws and bubbles for smooth movement and stable settings; fit the instrument to the agreed tribrach and tripod.

Records and packing: match calibration results to instrument serial numbers, check instructions and accessories, and repeat accuracy checks after the agreed packed transport test. Use quality inspection explained to define the inspection scope.

What goes wrong

A fine scale graduation does not prove angular accuracy. Poor collimation, a vertical index error or movement in the tribrach can produce inconsistent readings. A readable telescope image can hide a blurred circle-reading microscope, while stiff tangent screws make precise adjustment difficult.

Transport can disturb alignment even when the case looks intact. Compare arrival results with the pre-shipment record before releasing stock. Hold instruments with mismatched serial records, loose optics or failed accuracy checks for investigation and agree adjustment or replacement with the supplier.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.