A complete technical drawing is not always required for an initial quotation. In many cases, clearly recorded measurements, several photographs and basic information about the intended application are enough to begin assessing a custom wire component.
The key is knowing which dimensions matter and how to describe them. Overall length and width alone rarely provide enough information to recreate a component or prepare a reliable production quote.
Why are the overall dimensions not enough?
Two wire components with the same external dimensions may have completely different constructions. They may differ in wire diameter, spacing, bends, mounting points, edge design, load requirements and finish.
For a wire shelf, the support points and the way it fits inside the equipment may be critical. A wire basket also requires information about its usable internal capacity, rim construction and handles. For a wire divider, the mounting base and its fit with the shelf, basket or grid are often the most important details.
This is why measuring a wire component should include both its overall size and its construction details.
What should you prepare before measuring?
For a basic measurement, you will usually need:
- a steel tape measure,
- a calliper for measuring wire diameter,
- paper for a simple sketch,
- a marker or labels for identifying the sides,
- a phone or camera for photographs.
Before taking any measurements, define the orientation of the component. Mark the front, rear, top and bottom. This makes it clear which direction is described as the length, width, depth or height.
If the reference component is bent, worn or damaged, note this on the sketch or photograph. A deformation caused during use should not automatically be treated as part of the original design.
How to measure a wire shelf
Overall dimensions
Start by measuring the maximum overall length and width of the shelf. Include the outermost parts of the construction, such as bent edges, hooks or projecting wires.
If the shelf has a raised edge, front stop or additional bend, record its total height as well.
It is useful to add a simple sketch showing which side is considered the front and where each dimension was taken.
Wire diameter and spacing
Wire diameter is best measured with a calliper. If the component is galvanised, chrome-plated, powder-coated or plastic-coated, the measured value also includes the thickness of the finish.
The request should therefore state that the recorded value is the external wire diameter, including the coating. Do not subtract an assumed coating thickness unless the actual specification is known.
Wire spacing can be described in two ways:
- the clear distance between adjacent wires,
- the centre-to-centre distance between the wires.
Always indicate which method was used. Measuring across several consecutive spaces can also provide a more reliable result than measuring a single gap.
Supports and mounting points
Record the position of all hooks, holes, brackets, guides and other mounting features. Measure their locations from one clearly defined reference edge.
Avoid measuring each successive distance from one point to the next. Small errors may accumulate. It is more reliable to give the position of every mounting point relative to the same reference edge.
The support arrangement also affects structural performance. You can read more about the relationship between design, support and loading in our guide: What determines the load capacity of a wire shelf, basket or grid?
How to measure a wire basket
For a wire basket, external dimensions should be distinguished from usable internal dimensions.
External dimensions determine whether the basket will fit inside the equipment, display or guide system. Internal dimensions describe its actual usable capacity.
The specification should include:
- overall external length, width and height,
- usable internal length, width and depth,
- dimensions and shape of the top opening,
- wire diameter,
- wire spacing or mesh size,
- rim construction,
- position of handles, hinges, feet or guides.
If the basket is designed to slide, hang, stack or fold, show this function in a photograph or sketch. The required installation clearance and the direction of movement should also be recorded.
How to measure a wire divider
Begin by measuring the overall length and height of the divider. Then measure the part responsible for installation, such as its base, hooks, feet or the section inserted into a wire grid.
The request should specify:
- overall length and height,
- wire diameter,
- vertical and horizontal wire spacing,
- dimensions and shape of the mounting base,
- location of mounting points,
- installation direction,
- required clearance or fit.
If the divider works with a particular shelf or basket, measure that component as well. The dimensions of the divider alone may not be sufficient to recreate its mounting arrangement.
How to provide documentation without a technical drawing
The lack of a technical drawing does not have to prevent an initial project assessment. A clear hand-drawn sketch can provide the necessary information if all dimensions are marked unambiguously.
The sketch should show:
- overall dimensions,
- wire diameter,
- wire spacing or mesh size,
- bends and changes in geometry,
- mounting points,
- installation direction,
- any critical tolerances.
Add photographs taken from the front, side and top. Mounting features and other important details should be photographed close up. Include a tape measure or calliper in at least one image to provide a clear size reference.
If the component is a spare part, a photograph of the equipment or location where it is installed can be particularly useful. SHELMO also manufactures replacement wire components for service and maintenance based on photographs, physical samples, drawings or basic measurements.
What information should be included with the dimensions?
Dimensions alone do not describe all project requirements. Your request should also include:
- required quantity,
- intended application,
- expected load,
- operating environment,
- preferred material,
- required surface finish,
- availability of a physical sample,
- expected delivery date.
If the component will be used in contact with food, inside refrigeration equipment, in a humid environment or around cleaning chemicals, state these operating conditions clearly.
Minimum information checklist
Before sending the request, check whether you have included:
- overall length, width and height,
- wire diameter,
- wire spacing or mesh size,
- mounting point locations,
- photographs of the component and its details,
- a sketch with the orientation marked,
- application and load information,
- required quantity,
- material or surface finish,
- information about the availability of a physical sample.
A complete set of information allows the construction to be assessed more efficiently, identifies details that require clarification and provides a better basis for a reliable quotation.
Do you need a quote for a custom wire component?
Send us the dimensions, photographs, sketch or technical documentation. If you are unsure whether the information is sufficient, describe the intended application and we will indicate what is required for the next stage.
Frequently asked questions
Is a technical drawing required to quote a wire component?
Not always. Photographs, a simple dimensioned sketch and information about the application and quantity are often sufficient for an initial assessment. A technical drawing or physical sample may be required later, particularly when the component has complex mounting features.
Can a quote be prepared using photographs only?
Photographs may be sufficient for an initial feasibility assessment, but they usually do not provide accurate dimensions. Include at least the overall dimensions, wire diameter, required quantity and photographs taken from several directions.
How should the diameter of coated wire be measured?
Measure the wire with a calliper and state that the result includes the coating. Do not subtract an estimated thickness for zinc, paint or plastic unless the actual coating specification is known.
Should a wire basket be specified using external or internal dimensions?
Ideally, provide both. External dimensions determine the space required to install the basket, while internal dimensions describe its usable capacity.
How should mounting points be measured?
Measure the position of each mounting point from the same clearly identified reference edge. Also specify the diameter, shape and direction of the hook or hole and indicate whether its position requires a particular tolerance.
