LIMITED POWER OF ATTORNEY

KNOW ALL BY THESE PRESENTS, that the undersigned, Dermod Ranaghan,
hereby constitutes and appoints Donald Tringali my true and lawful
attorney(s)-in-fact to:

(1) execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of CARTESIAN, INC. (the "Company"),
Forms 3, 4 or 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder; and

(2) do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such
Form 3, 4 or 5 and timely file such form with the United States
Securities and Exchange Commission and any stock exchange or similar
authority; and

(3) take any other action of any type whatsoever in connection
with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of,
or legally required by, the undersigned, it being understood that
the documents executed by such attorney-in-fact on behalf of the
undersigned pursuant to this Limited Power of Attorney shall be
in such form and shall contain such terms and conditions as such
attorney-in-fact may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to such attorneys-in-fact full power
and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as
fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution
or revocation, hereby ratifying and confirming all that such
attorneys-in-fact shall lawfully do or cause to be done by virtue
of this limited power of attorney and the rights and powers herein
granted.  The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request
of the undersigned, is not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with Section 16
of the Securities Exchange Act of 1934.

This Limited Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4 or 5
with respect to the undersigned's holdings of or transactions
in securities issued by the Company, unless earlier revoked by
the undersigned in a signed writing delivered to the foregoing
attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Limited
Power of Attorney to be executed on the 9th day of November, 2017.


                  Signature:  /s/Dermod Ranaghan

                  Print Name: Dermod Ranaghan