Does your adjustable spanner never quite fit? always that fraction to small? well now you can satisfy those bigger nut sizes with your adjustable tool.

Step 1: wind out the screw that holds the thumb adjuster in.
Step 2: remove thumb adjuster
step 3: remove jaw
step 4: take out grinder and grind the side of the jaw (on the bottom where the thread scroll is - not the face of the jaw) the oppisite side to where the thread starts, down to the level of deepest part of the thread, all the way along to the end. this allows the the scroll to keep winding out.
step 5: reassemble and wind out your adjustable tool to a bigger size which should fit those nuts that were just to big for your adjustable tool.

Side effects of tool modification: Your adjustable tool needs to be stored in a wound in state now otherwise it is easy for your jaw to fall completely off through vibration and careless storage.

Just made this modification to my 15" and now it fits nuts designed for 18+"

its a good mod

Have you got a pic?

Nah, mate, Mike's not that crash hot at photography!!!