Designation:E2494−08StandardGuideforExaminationofTypewrittenItems1ThisstandardisissuedunderthefixeddesignationE2494;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoversproceduresthatshouldbeusedbyforensicdocumentexaminers(GuideE444)forexaminationsandcomparisonsinvolvingtypewrittenitemsandrelatedprocedures.1.2Theseproceduresareapplicablewhethertheexamina-tionandcomparisonisofquestionedandknownitemsorofexclusivelyquestioneditems.1.3Theseproceduresincludeevaluationofthesufficiencyofthematerial(questioned,orknown,orboth)availableforexamination.1.4Proceduresarealsogivenfortakingexemplarsfromtypewritersandtheproperhandlingoftypewritersorpartsoftypewritersthatmightberelevant.1.5Thesemethodscanalsobeapplicable(inwholeorinpart)toexaminationsofdocumentspreparedonotherimpactandnonimpactprintingdevices.1.6Theparticularmethodsemployedinagivencasewilldependuponthenatureofthematerialavailableforexamina-tion.1.7Thisguidemightnotcoverallaspectsofunusualoruncommonexaminationsoftypewrittenitems.1.8Thisguidecannotreplacetraining(GuideE2388)orexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.1.9Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.10Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E444GuideforScopeofWorkofForensicDocumentExaminersE1658TerminologyforExpressingConclusionsofForensicDocumentExaminersE1732TerminologyRelatingtoForensicScienceE2195TerminologyRelatingtotheExaminationo...
