Linear metre - what does that mean?

[eandg]

We were at a show today and spoke with various manufacturers, one of whom gave a price per 'linear metre'. Never picked up on it at the time but not sure what it means? 

[recoveringbuilder]

It’s a running metre, so if you were buying say a plank of wood it would be priced at x amount per linear metre and I suspect you were at the Homebuilding show in secc, I was there too!

Edited June 2, 2019 by Christine Walker
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[eandg]

Just now, Christine Walker said:

It’s a running metre, so if you were buying say a plank of wood it would be priced at x amount per linear metre

Thanks, presumed as much but think I've mixed my notes up then as I've taken that as a price for windows but we were also looking at a sliding door which it may refer to (as surely windows have different heights).