Page 2
Superficial Rockwell Hardness Testers
MODELNO.900‐345D
To reference digital indicator functions and usage, please see 900345-9500 Operation Manual at the back of this manual
OperatingInstructions&PartsManual
Pleasereadandsavetheseinstructions.Readcarefullybeforeattemptingtoassemble,install,operateormaintaintheproductsdescribed.Protect
yourselfandothersbyobservingallsafetyinformation.Failuretocomplywithinstructionscouldresultinpersonalinjuryand/orpropertydamage!
RetainInstructionsforfuturereference.
Description
The900‐345HardnessTesteraccuratelymeasureshardnessofmaterialsinRockwellNandTscales.Heat‐treated
steelsaretestedusinga120diamondindentorintheN‐scale.Soft/thinmaterialsaretestedusinga1/16"carbide
ballindentorintheT‐scale.Thistesterfeaturesaweightadjustmentknobforquickandeasyadjustmentsbetween
differentscales.Release/resetleverisprovidedforquickandaccuratetesting.HardnessTesterincludesstandard,
largeandV‐shapedanvilsforholdingsmall,largeandroundorcurvedmaterials.Storagebox,testblocks,120
diamondindentoranda1/16”carbideballindentor.
Unpacking
ToolKit:
A. LargeAnvil
B. V‐shapedAnvil
C. SmallRoundAnvil
D. CalibratedTestBlocks
1. Oneeach,HR15N
2. Oneeach,HR30N
3. Oneeach,HR45N
4. Oneeach,HR15T
5. Oneeach,HR30T
6. Oneeach,HR45T
E. 120DiamondIndentor
F. 1/16"CarbideBallindentor
G. StorageCase
DoNotDiscardShippingCrateasThisMay
beNeededforFutureTransportation.
Besuretesterislevelbothfront/backandleft/rightto0.002in/in.