EXHIBIT 23.3
 
                         INDEPENDENT AUDITORS' CONSENT
   
  We consent to the use in this Amendment No. 2 to Registration Statement No.
333-19199 of Thermedics Detection Inc. on Form S-1 of our report dated January
29, 1997 (relating to the consolidated financial statements of Rutter & Co.
B.V. for the period from January 25, 1996 to December 28, 1996, not presented
separately herein) appearing in the Prospectus, which is part of this
Registration Statement.     
   
  We also consent to the use in this Amendment No. 2 to Registration Statement
No. 333-19199 of Thermedics Detection Inc. on Form S-1 of our report dated
March 13, 1996 (except for the disclosures included in the supplementary
information under the caption "United States Generally Accepted Accounting
Principles (U.S. GAAP)" which is as of December 20, 1996) relating to the
consolidated financial statements of Rutter & Co. B.V. for the two years ended
December 31, 1995 appearing in this Prospectus, which is part of this
Registration Statement.     
 
  We also consent to the reference to us under the heading "Experts" in such
Prospectus.
 
Deloitte & Touche Registeraccountants
 
Almelo, The Netherlands
   
February 17, 1997