Decision support tool
How big is "2.9 inch", really?
Inches describe the diagonal. What matters on the shelf is width and height — and the same diagonal can mean a completely different label depending on aspect ratio. Calibrate your screen with a bank card and see catalogue labels at true 1:1 size.
1. Calibrate your screen
The browser does not know your screen's true physical scale: the CSS "inch" is a nominal unit with no relation to your device's pixel density. So we ask you for the scale.
Hold any bank or ID card against the screen and move the slider until the outline matches the card exactly.
Not calibrated yet — the scale below is approximate.
Why a bank card?
Why a bank card? The ISO/IEC 7810 ID-1 standard fixes every card worldwide at 85.60 × 53.98 mm — so you carry a millimetre-accurate ruler. Banknotes and coins vary by country and series.
2. Pick a size
Every unique screen size in the catalogue is listed. The same diagonal appearing as separate rows with different aspect ratios is intentional: they really do look different on the shelf.
3. Actual size
Approximate scale — not calibratedRail height 39 mm — the most common in Türkiye. Whether the label fits depends on the housing margin as well.
- Width
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- Height
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- Diagonal
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- Resolution
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- Pixel density
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The housing is always larger than the screen and varies by manufacturer; since the catalogue holds no housing dimensions, we do not estimate them. The diagonal also comes from the manufacturer's rounded figure: a panel sold as "2.9 inch" is really 2.87". The deviation is about 1%, under a millimetre at typical sizes — it will not change a fit decision, but it is not identical to the datasheet either.
Ask for exact housing dimensions in writing during the tender; the specification generator includes this clause.
1 catalogue record(s) could not be measured: diagonal or pixel resolution is not documented. Rather than estimating, they are left out of the list.