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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0000892626-04-000004.txt : 20040107
<SEC-HEADER>0000892626-04-000004.hdr.sgml : 20040107
<ACCEPTANCE-DATETIME>20040107184827
ACCESSION NUMBER:		0000892626-04-000004
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040105
FILED AS OF DATE:		20040107

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ZLOTNICKI JOSEPH M
		CENTRAL INDEX KEY:			0001207502

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09788
		FILM NUMBER:		04514064

	BUSINESS ADDRESS:	
		STREET 1:		C/O LANDAUER INC
		STREET 2:		2 SCIENCE ROAD
		CITY:			GLENWOOD
		STATE:			IL
		ZIP:			60425-1586

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LANDAUER INC
		CENTRAL INDEX KEY:			0000825410
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-TESTING LABORATORIES [8734]
		IRS NUMBER:				061218089
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		TWO SCIENCE RD
		CITY:			GLENWOOD
		STATE:			IL
		ZIP:			60425
		BUSINESS PHONE:		7087557000

	MAIL ADDRESS:	
		STREET 1:		2 SCIENCE ROAD
		CITY:			GLENWOOD
		STATE:			IL
		ZIP:			60425

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TECH OPS LANDAUER INC
		DATE OF NAME CHANGE:	19910521
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
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    <periodOfReport>2004-01-05</periodOfReport>


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        <issuerName>LANDAUER INC</issuerName>
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            <rptOwnerName>ZLOTNICKI JOSEPH M</rptOwnerName>
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            <rptOwnerStreet2>2 SCIENCE ROAD</rptOwnerStreet2>
            <rptOwnerCity>GLENWOOD</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60425</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP - International</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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            <securityTitle>
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            <transactionDate>
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                <transactionFormType>4</transactionFormType>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
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                <transactionAcquiredDisposedCode>
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                <directOrIndirectOwnership>
                    <value>D</value>
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        </nonDerivativeTransaction>

        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
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            <transactionDate>
                <value>2004-01-05</value>
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            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>600</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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        <nonDerivativeTransaction>
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            <transactionDate>
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                    <value>D</value>
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        </derivativeTransaction>

        <derivativeTransaction>
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            <transactionTimeliness>
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            <transactionAmounts>
                <transactionShares>
                    <value>4500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-01-05</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2012-11-05</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>6000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>

        <derivativeTransaction>
            <securityTitle>
                <value>Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>39.62</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2003-11-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>12000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2004-01-05</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2013-11-13</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>12000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>

    </derivativeTable>

    <footnotes>
        <footnote id="F1">Exercisable as to one fourth of the number of shares granted on the first through the fourth anniversary of the date of grant.</footnote>
        <footnote id="F2">Right to buy without monetary consideration.</footnote>
        <footnote id="F3">Forfeiture of unvested stock options.</footnote>
    </footnotes>


    <ownerSignature>
        <signatureName>Joseph M. Zlotnicki</signatureName>
        <signatureDate>2004-01-07</signatureDate>
    </ownerSignature>

</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----