Quick answer. This category currently holds one record, EC-0001, a physical relief of land chart - and we would rather say that than pad the page out. What is worth putting here instead is the guidance, because charts are bought casually and then occupy a wall for a decade. Four tests decide whether a chart earns its wall space: can it be read from the back row, will it survive being mounted, is its content still correct, and should it be on permanent display at all? The last is the one nobody asks, and the answer is usually no - a rotated set on a rail teaches far more than a permanent gallery that students stopped seeing in the second week.
This is the test that is never applied before purchase and always applied, silently, by the students at the back. A chart designed for a textbook page and reprinted large keeps its original label hierarchy, so the headings grow and the detail labels - which are the content - stay unreadable at distance.
The useful rule of thumb from signage practice is about 2.5 cm of letter height for every 3 metres of viewing distance for comfortable reading. So in a room where the back row is nine metres from the wall, the smallest text that students must read needs to be of the order of 7 to 8 cm high - which is far larger than most charts provide. Ask for the overall chart size and the height of the smallest text, and measure your room before ordering. Where the detail genuinely has to be fine - a classification key, a periodic table with full data - accept that it is a reference chart to be walked up to and read, and position it where students can get to it rather than above the board.
A chart is a permanent, unquestioned statement on a classroom wall, and that makes an out-of-date one genuinely harmful: it teaches the wrong thing quietly, every day, to students who have no reason to doubt it. The categories that date:
So ask for the edition or print date, and have it stated on the quotation. And when a chart does go out of date, take it down - a department that leaves an obsolete chart up because it fills a space is teaching from it whether it intends to or not.
Wall space is finite, and attention is more finite. A chart that has been in the same place for a year has stopped being seen - it has become part of the wall. The practice that works is to divide charts into two groups:
It is a fair question in a room that already has a projector, and the distinction is clean:
So the two are complements rather than alternatives, and the test for buying a chart is simply: will students need to look at this while their hands are busy? If yes, it belongs on the wall. If it is something to be shown and discussed, project it.
For teaching material that is three-dimensional rather than printed - which is better again for anything spatial - see geography lab models, meteorology and earth science for relief globes and landform models, and the model ranges in botany and plant models and human anatomy models. A relief globe teaches what a relief chart cannot, for the reason set out on that page.
Related ranges: whiteboards and classroom boards, science teaching equipment for the staged equipping plan, geography lab models and meteorology and earth science. The full educational kit and educational lab equipment categories list the rest.
Work from the back row. The signage rule of thumb is about 2.5 cm of letter height for every 3 metres of viewing distance, so a room with a nine-metre back row needs the smallest essential text to be of the order of 7 to 8 cm high - larger than most charts provide. Ask for the overall size and the smallest text height, measure your room, and where the detail must be fine, treat the chart as a reference to be walked up to and hang it where students can reach it.
Because tape decides a chart's whole life. A chart taped to a painted wall takes the paint off when it comes down, so it never comes down - it stays up past the topic, past its usefulness, and is eventually thrown away rather than stored. A rail or clips at the top of the wall costs very little and turns charts from fixtures into teaching material that can be rotated with the syllabus.
A small number should - the ones students consult while working, typically the periodic table, a units and symbols table and the safety information. Everything else is better rotated: a chart that appears for three weeks while the topic is taught is looked at, and the same chart left up for a year becomes part of the wall. Rotating topic charts is the most effective change a department can make to how it uses them.
Prefer charts that teach a concept over charts that carry data, because the concept does not expire while populations, production figures and rankings do. For political maps, classifications and anything with units or nomenclature, ask for the edition or print date and have it stated on the quotation. And when a chart does date, take it down - an obsolete chart left up to fill a space is still being taught from.
For anything students must refer to while their hands are busy, yes - the periodic table during a calculation, a key during an identification, a procedure during a practical. A chart is available at the moment of need, with no equipment and no lamp. A projector is better for anything transient, current or built up step by step. They are complements, and the test for a chart is simply whether students will need to look at it while working.
Because it was created around a single record, and we would rather say so than imply a range that is not there. We have recommended that it be expanded or merged with the ranges linked above. If you tell us the subjects and topics you teach, and the distance to your back row, we will quote charts against that rather than against a catalogue listing.
Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.
Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.
This page is deliberately short and written as guidance rather than as a product listing, because the category contains a single record and padding it would serve nobody. We have recommended that it be expanded or merged with the related ranges linked above. The sizing rule quoted is a general signage guideline rather than a standard, and should be checked against your own room; chart dimensions, text sizes, finishes, mountings and edition dates will be confirmed in writing on the quotation. For anything political, statistical or taxonomic, ask for the edition date and verify the content before it goes on a wall - an out-of-date chart teaches from the wall whether anyone intends it to or not.
Ray exports charts are imprinted on a top notch quality paper with best quality ink so pictures and content seems clear and beautiful.
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