EXHIBIT 31.2
CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
CERTIFICATION
I, Thomas R. Swain, certify that:
1. | I have reviewed this Amendment No. 1 to Quarterly Report on Form 10Q/A of GSI Group Inc.; and |
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2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: November 14, 2005
| /s/ THOMAS R. SWAIN |
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| Thomas R. Swain |
| Vice President, Finance and Chief Financial Officer |
