And if we include T-squares in this competition?

https://www.screwfix.com/p/stanley-drywall-t-square-48-1220mm-/5826K?kp
id=5826K&ds_kid=92700022885043144&ds_rl=1249796&ds_rl=1245250&ds_rl=1249481&gcli
d=EAIaIQobChMIw4Dij76N2wIVAUTTCh1n1Af8EAQYASABEgKNAPD_BwE&gclsrc=aw.ds&dclid
=CLLLlZe-jdsCFXce0wodQhMJWw">https://www.screwfix.com/p/stanley-drywall-t-square
-48-1220mm-/5826K?kpid=5826K&ds_kid=92700022885043144&ds_rl=1249796&ds_rl=124525
0&ds_rl=1249481&gclid=EAIaIQobChMIw4Dij76N2wIVAUTTCh1n1Af8EAQYASABEgKNAPD_BwE&gc
lsrc=aw.ds&dclid=CLLLlZe-jdsCFXce0wodQhMJWw

best wishes,

Mike L.