SignalGauges0.001mm,0.01mm,and0.05mmtypeS-5*Withitshighresolutionof 0.001mmscale,itismost suitableforjudgementofthe valuesmeasuredonfinished partswithhighaccuracy.S-7*Withitsresolutionof0.01mm scale,itisgenerallyused.Its pointerisinananti-shock structuresoastogivestable discriminatingsignals.S-9*Withitsmostgrossscaleof 0.05mm,itisapplicableto selectgrosslyworkedparts andascastpartsatthelow- estcosts.