SURFA CE RESISTANCE CHECKER ThefirstpocketresistivityMeter,withspecifications rangingfrom103Ohmspersquareto1012Ohmsper square,withaccuracy+or1/2Decade.Themetercanbe suppliedwithacertificateofCalibrationuponrequest. Themetermeasuresbothsurfaceresistivity andresistancetoground.TOmeasuresurfaceresistivity,simplyplacethemeteronthematerialthatrequiresmeasuring,andpressthegreentestbutton.ThemeterwillthenlighttheappropriateLEDfrom103-1012Ohmspersquareorinsulative.Tomeasureresistancetoground,repeatthisprocessandinserttheearthleakageleadintheearthsocketattachingthecroccliptoyourgroundpoint Themeterusescorrectlyspacedparallelbarsforsensingitsmeasurementsandoperateswitha9voltPP3battery,givingover40hoursoftestingtime.Calibrationofunitisrecommended,thiscanbeobtainedbycontactingyourdealer. SIZE:135mmx70mmx25mm POWER:9voltPP3Battery EARTHLEAKAGELEAD PVCCARRYINGCASE