EXHIBIT 10.15 [MERRILL LYNCH LETTERHEAD] March 31, 1999 Dr. Simon Raab Faro Technologies, Inc. 125 Technology Park Lake Mary, FL 32746 RE: EXTENSION OF WCMA LINE OF CREDIT NO. 740-07K27 Dear Dr. Raab, It is a pleasure to inform you that we have approved an extension of the above-numbered WCMA Line of Credit for Faro Technologies, Inc. As extended, the new Maturity Date will be March 31, 2000, with all other terms and conditions remaining unchanged. In connection with this extension, a $5,000.00 fee will be charged to the WCMA Account. Once again, we are pleased to provide you with this extension of your WCMA Line of Credit. Should you have any questions, please contact Manny Calzon at 813/273-8557. Very truly yours, Merrill Lynch Business Financial Services Inc. By: /s/ VALERIE WILDER ------------------ Valerie Wilder Senior Portfolio Manager cc: Manny Calzon Chris Hunter