EXHIBIT 23.1
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-1 of our report dated July 13, 1998, relating
to the financial statements of Environmental Systems Products, Inc. and
Subsidiaries, which appears in such Prospectus. We also consent to the
application of such report to the Financial Statement Schedule for the three
years ended December 31, 1997 listed under Item 16(b) of this Registration
Statement when such schedule is read in conjunction with the financial
statements referred to in our report. The audits referred to in such report also
included this schedule. We also consent to the reference to us under the heading
"Experts" in such Prospectus.
 
PricewaterhouseCoopers LLP
Hartford, Connecticut
December 21, 1998