Exhibits 5.1, 23.2

April 5, 2006

Mr. Scott R. Sand CEO & Chairman
Ingen Technologies, Inc.
285 E. County Line Road
Calimesa, CA 92320

Re:  Opinion of Legality regarding SB-2 Registration Statement

Dear Mr. Sand,

     This letter constitutes an opinion of legality with respect to 31,753,741
unrestricted shares of Ingen Technologies, Inc.'s ("Ingen") common stock
contained in Ingen Technologies, Inc.'s SB-2 Registration Statement as filed
with the Securities and Exchange Commission on or about April 5, 2006.

     This letter is privileged and confidential and the opinion herein is issued
for the sole purpose of opining on the legality of the common shares contained
in the SB-2 Registration Statement. No other purpose or use of this letter is
intended or authorized. You have my consent to include this letter as an exhibit
to the aforesaid SB-2 Registration Statement.

     Having reviewed the SB-2 registration statement, exhibits thereto and other
materials supplied to me, and subject to my review of any amendments to the
registration statement filed before an effective date is obtained, I am of the
opinion that the above securities of Ingen Technologies, Inc. will, when sold,
be lawfully issued, fully paid and non-assessable.

                                                     Very Truly Yours,

                                                     - s -

                                                     PETER J. WILKE
                                                     Attorney at Law