-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001097241-10-000026.txt : 20100216
<SEC-HEADER>0001097241-10-000026.hdr.sgml : 20100215
<ACCEPTANCE-DATETIME>20100216152611
ACCESSION NUMBER:		0001097241-10-000026
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20100216
DATE AS OF CHANGE:		20100216

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LECROY CORP
		CENTRAL INDEX KEY:			0000943580
		STANDARD INDUSTRIAL CLASSIFICATION:	INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS [3825]
		IRS NUMBER:				132507777
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-44819
		FILM NUMBER:		10607084

	BUSINESS ADDRESS:	
		STREET 1:		700 CHESTNUT RIDGE RD
		CITY:			CHESTNUT RIDGE
		STATE:			NY
		ZIP:			10977
		BUSINESS PHONE:		9144252000

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STATE OF WISCONSIN INVESTMENT BOARD
		CENTRAL INDEX KEY:			0000854157
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				396006423
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		121 EAST WILSON STREET
		CITY:			MADISON
		STATE:			WI
		ZIP:			53707
		BUSINESS PHONE:		6082662381

	MAIL ADDRESS:	
		STREET 1:		P.O. BOX 7842
		STREET 2:		121 EAST WILSON STREET
		CITY:			MADISON
		STATE:			WI
		ZIP:			53707
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>lecroycorp2009yeswib.txt
<TEXT>

<PAGE> 1
                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C.  20549

                                  SCHEDULE 13G

                   UNDER THE SECURITIES EXCHANGE ACT OF 1934

                          (AMENDMENT NO.  ____4____)*


                            LECROY CORP COM
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                               (Name of Issuer)

                                 Common Stock
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                        (Title of Class of Securities)


                                  52324W109
                           - - - - - - - - - - - - -
                                 (CUSIP Number)


*The remainder of this cover page shall be filled out for a reporting
person's initial filing on this form with respect to the subject class
of securities, and for any subsequent amendment containing information
which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of
that section of the Act but shall be subject to all other provisions of
the Act (however, see the Notes).

<PAGE> 2

Cusip No.      52324W109
             - - - - - - -

                                      13G
____________________________________________________________________________
1. NAME OF REPORTING PERSON
    S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                State of Wisconsin Investment Board
                      39-6006423
____________________________________________________________________________
2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP  *
                                                                     (a)____
                    Not Applicable                                   (b)____
____________________________________________________________________________
3. SEC USE ONLY

____________________________________________________________________________
4. CITZENSHIP OR PLACE OF ORGANIZATION
      Madison, Wisconsin
____________________________________________________________________________
NUMBERS OF        5. SOLE VOTING POWER
SHARES                            645,538
BENEFICIALLY      __________________________________________________________
OWNED BY          6. SHARED VOTING POWER
EACH                              Not Applicable
REPORTING         __________________________________________________________
PERSON            7. SOLE DISPOSITIVE POWER
WITH                              645,538
                  __________________________________________________________
                  8. SHARED DISPOSITIVE POWER
                                  Not Applicable
____________________________________________________________________________
9. AGGREGATE AMOUNT BENEFICALLY OWNED BY EACH REPORTING PERSON
                                  645,538
____________________________________________________________________________
10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
    SHARES *                      Not Applicable
____________________________________________________________________________
11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                  5.13
____________________________________________________________________________
12. TYPE OF REPORTING PERSON *
          EP (Public Pension Fund)
____________________________________________________________________________

                   *  SEE INSTRUCTIONS BEFORE FILLING OUT!

<PAGE>  3

ITEM 1. ISSUER
        (a)  LECROY CORP COM
        (b)  700 Chestnut Ridge Road
             Chestnut Ridge, NY 10977 USA

ITEM 2. PERSON FILING
        (a) State of Wisconsin Investment Board
        (b) P.O. Box 7842
            Madison, WI 53707
        (c) Wisconsin State Agency
        (d) See cover page
        (e) See cover page

ITEM 3. THIS STATEMENT IS FILED PURSUANT TO 13d-1(b) or 13d-2(b) AND THE
        STATE OF WISCONSIN INVESTMENT BOARD IS A GOVERNMENT AGENCY WHICH
        MANAGES PUBLIC PENSION FUNDS SUBJECT TO PROVISIONS COMPARABLE TO
        ERISA.

ITEM 4. OWNERSHIP
        (a) See Row 9 on Page 2
        (b) See Row 11 on Page 2
        (c) The State of Wisconsin Investment Board retains sole voting
            and dispositive power for all shares.

ITEM 5. IF THIS STATEMENT IS BEING FILED TO REPORT THE FACT THAT AS OF THE
        DATE HEREOF THE REPORTING PERSON HAS CEASED TO BE THE BENEFICIAL
        OWNER OF MORE THAN FIVE PERCENT OF THE CLASS OF SECURITIES, CHECK
        THE FOLLOWING _____.

ITEM 6. NOT APPLICABLE

ITEM 7. NOT APPLICABLE

ITEM 8. NOT APPLICABLE

ITEM 9. NOT APPLICABLE

ITEM 10. CERTIFICATION

      By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the ordinary
course of business and were not acquired for the purpose of and do not
have the effect of changing or influencing the control of the issuer of
such securities and were not acquired in connection with or as a
participant in any transaction having such purpose or effect.

                                   SIGNATURE

      After reasonable inquiry to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete
and correct.

                                February 5, 2010
                               - - - - - - - - - -
                                      Date

                               /s/ David Villa
                               - - - - - - - - -
                                   Signature

              David Villa, Chief Investment Officer - Investment Groups
              - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                                   Name/Title
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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