The best replacement for leveler is sharpener.

The best alternatives to leveler are rated as following:
★★★★★  sharpener
★★★★  leveller
★  s-194 patch

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Speaking about leveler, one probably shouldn't forget about stud finder.

Other search terms related to leveler and their ratings are:
★★★★★ stud finder
You have in mind a companion for leveler and it is not yet here? Propose!



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leveler
sharpener
leveller