Dull Scaler Dull Scaler 678-911 A double ended hand instrument on #6 handle, combining a SH6 scaler and a SH7 scaler. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.