Pretty old post, but good explanation of why the measuring technique matters
http://skateboardingismylifetimesport.blogspot.com/2013/05/deck-length-measuring-by-company.html?m=1
Old post, but relevant information from that blog post above and an interesting read, if you have the time.
This was from not too long ago, with what was the standard 8.5 x 32 (Baker) - 8.5 x 32.7 (others) = same boards.
Board dimensions are a funny thing.
Here are four different brands, all from the same woodshop, all of which those companies list different lengths for their 8.5 wide standard shaped decks, but all are actually the exact same size and dimensions overall. Note the wheelbase is listed the same too, at 14.5 for all.
I have also included an older Baker deck beside the newer one, just for reference, but they are said to be 8.5 x 32, then the Black Label is said to be 8.5 x 32.38, the Element is 8.5 x 32.7 and the Generator (shop brand) deck is listed as 8.5 x 32.5 from their site.
All are actually 8.5 x 32.7 if the tape measure is held against the concave right through, or closer to 32.25 if kept tight from end to end, with a nose at about 7.2 and tail at about 6.7 but that is just rough measurements really.
The dimensions shown on the Element deck are the most accurate, but I know some companies / places prefer to measure straight across, not with the concave, which will always give a different length.
Other decks from different companies, regardless of woodshop, often have inconsistencies, which is why I find it so interesting to have a number of the same boards from various places to measure and compare, all of these being the same, as I have multiples of each.
There are ever so slight differences in concave too, but for the most part, they all are approximately the same, some slightly steeper and some slightly more mellow than others, depending on where they were in the press, being four at a time in this particular woodshop, the top being the steepest down to the fourth deck having the least concave. It can be fairly significant, as per an older post I put up.
The last pic is just an added one with a few other brands which also use the same woodshop, but I didn't have the exact same size boards from those brands to add, even though the Birdhouse and Antihero both are 14.5 wheelbase, they are listed as 8.38 wide and 32.25 long, which come in just under the length of the other ones.
To list all the brands from the top tier woodshop like this one would take a little too long here, but these are just a few of them anyway.
Topic: What about deck length? (Read 6273 times)