MadeInU.S.A.　　美國製造 H-3震动转速表Theseinstrumentsareidealforcheckingspeedsoftotallyenclosedelectricalequipment.JustholdtheTachometeragainstmotor,turbine,pump,vacumcleaner,hairdryerorothersimilarequipmentanywhereandreadthespeed.TheseTachometersaremountedincasesofcastaluminiumalloyfinishedwithblackcrackleenamel.　Alsoavailablewithbossesforpermanentmounting.Lowestpossiblespeedis600Rpmandthehighestis30,000Rpm.H-3震动转速表是專門設計予量度一些完全密封式的轉動型家庭電器.在量度時,只需把轉速錶緊貼在馬達,引擎,吸塵機或同類型之產品的外殼上,便可量出讀數.H-3震动转速表為裝設在一鋁合金內,堅固耐用.H-3震动转速表最低轉數為600轉/分,最高為30,000轉/分;視乎各型號的分別.NISTTraceableCertificateisoptional.可選購美國NIST國際認可証書.TypeH-3,With2Rowsof61ReedsEach