POWER OF ATTORNEY
(For Executing Form ID and
Forms 3, 4 and 5)

      Know all by these presents, that the undersigned hereby
constitutes and appoints each of Sam Lipson, Dennis Craig II and
Dorothy Vinsky of Cooley LLP, and Kristie Scott and James Rallo
of Xometry, Inc. (the ?Company?), signing individually, the
undersigned?s true and lawful attorneys-in-fact and agents to:

      (1)	Prepare, execute in the undersigned?s name and on the
undersigned?s behalf, and submit to the Securities and Exchange
Commission (the ?SEC?), a Form ID and Forms 3, 4 and 5
(including amendments thereto and joint filing agreements in
connection therewith) in accordance with Section 16 of the
Securities Exchange Act of 1934, as amended (the ?Exchange Act?),
and the rules thereunder, in the undersigned?s capacity as an
officer, director or beneficial owner of more than 10% of a
registered class of securities of the Company;

      (2)	Do and perform any and all acts for and on behalf of the
undersigned that may be necessary or desirable to prepare and
execute any such Form ID and Forms 3, 4 or 5 (including
amendments thereto and joint filing agreements in connection
therewith) and file such forms with the SEC and any stock
exchange, self-regulatory association or any similar authority;
and

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

      The undersigned hereby grants to each such attorney 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
attorney in fact, or such attorney in fact?s substitute or
substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-
fact, and their substitutes, in serving in such capacity at the
request of the undersigned, are not assuming (nor is the Company
assuming) any of the undersigned?s responsibilities to comply
with Section 16 of the Exchange Act.

      This Power of Attorney shall remain in full force and effect
until the earliest to occur of (a) the undersigned is no longer
required to file Forms 3, 4 and 5 with respect to the
undersigned?s holdings of and transactions in securities issued
by the Company, (b) revocation by the undersigned in a signed
writing delivered to the Company and the foregoing attorneys-in
fact or (c) as to any attorney-in-fact individually, until such
attorney-in-fact is no longer employed by the Company or employed
by or a partner at Cooley LLP or another law firm representing
the Company, as applicable.

      IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of June 7, 2021.

By: /s/ Fabio Rosati

Fabio Rosati