<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ PAULINE LO ALKER
                                        ----------------------------------------
                                        (Signature)
                                        Pauline Lo Alker

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ A. GARY AMES
                                        ----------------------------------------
                                        (Signature)
                                        A. Gary Ames

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ GERRY B. CAMERON
                                        ----------------------------------------
                                        (Signature)
                                        Gerry B. Cameron

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ DAVID N. CAMPBELL
                                        ----------------------------------------
                                        (Signature)
                                        David N. Campbell

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ FRANK C. GILL
                                        ----------------------------------------
                                        (Signature)
                                        Frank C. Gill

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ MERRILL A. McPEAK
                                        ----------------------------------------
                                        (Signature)
                                        Merrill A. McPeak

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ ROBIN L. WASHINGTON
                                        ----------------------------------------
                                        (Signature)
                                        Robin L. Washington

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ CYRIL J. YANSOUNI
                                        ----------------------------------------
                                        (Signature)
                                        Cyril J. Yansouni

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS, COLIN L.
SLADE and JAMES F. DALTON and each of them, as the undersigned's true and lawful
attorneys and agents, with full power of substitution and resubstitution for the
undersigned and in the undersigned's name, place and stead, in any and all
capacities, to sign the Tektronix, Inc. Annual Report on Form 10-K for the year
ended May 27, 2006 and any and all amendments thereto, and to file the same,
with all exhibits thereto, and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys and agents, and
each of them, full power and authority to do any and all acts and things
necessary or advisable to be done, as fully and to all intents and purposes as
the undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ RICHARD H. WILLS
                                        ----------------------------------------
                                        (Signature)
                                        Richard H. Wills

<PAGE>

                                                                      EXHIBIT 24

                                POWER OF ATTORNEY

          The undersigned constitutes and appoints RICHARD H. WILLS and JAMES F.
DALTON and each of them, as the undersigned's true and lawful attorneys and
agents, with full power of substitution and resubstitution for the undersigned
and in the undersigned's name, place and stead, in any and all capacities, to
sign the Tektronix, Inc. Annual Report on Form 10-K for the year ended May 27,
2006 and any and all amendments thereto, and to file the same, with all exhibits
thereto, and other documents in connection therewith, with the Securities and
Exchange Commission, granting unto said attorneys and agents, and each of them,
full power and authority to do any and all acts and things necessary or
advisable to be done, as fully and to all intents and purposes as the
undersigned might or could do in person, hereby ratifying and confirming all
that said attorneys and agents or either of them, or their or his substitute or
substitutes, may lawfully do or cause to be done by virtue hereof.

DATED: August 2, 2006


                                        /s/ COLIN L. SLADE
                                        ----------------------------------------
                                        (Signature)
                                        Colin L. Slade