i could’nt true a wheel until i learnt to build a wheel, once i’d built a wheel i had more of an understanding/feel for what was happening when i tried to true.
dishing tool, for the little cost worth it definitely.
tensioner… agree with comments above re. accuracy but i’d buy one.
i’d also buy the very best park jig i could to if i had the cash.
mind you, much as i love building wheels and take pride in doing it myself, my last few wheelsets have been hope hoops. for what the cost me complete i could’nt even get close to the parts cost alone. and neither set have ever given me any grief at all.
wheelpro… best few quid you will spend. jobst brandt book also very good, some different ideas in it.