Yes it is adjustable for length/depth and he provides a chart. That is the one...was designed in the 90s by a gentleman in Taiwan and is a very good design...will last and stay accurate longer. I didn't know he changed his ID, but thanks for letting me know. For the record here is what I like about it:
it wipes along a flat surface (the arc sweep ones fail much sooner)
the resistance material does not get wiped but is cast to the side where it isn't stressed
the wiping surface is actually tiny pieces of metal that have been set into the body of the sender so it will be a very long time before they wear out
it is accurate.

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end