If you want to sell products by length or width - for example, 1.77 meters - then this cannot be done via the normal store admin.
We will drill your store so that you can create:
Minimum length, e.g. 1 meter
Spacing, e.g. 0.25
Maximum length, e.g. 15 meters
Your customer can now enter 1 or 1.25 or 1.5 or 1.75... and so on.
If he enters 0.5, the plugin will automatically increase to 1 and inform him accordingly.
If he enters 16, the plugin will automatically reduce it to 15 and inform him accordingly.
If he enters 1.1, the plugin will automatically increase it to 1.25 and inform him accordingly.