Instrumentation specialist National Instruments reported revenue in Q1 2006 of $155 million, a 19 percent increase over Q1 2005. Generally Accepted Accounting Principles (GAAP) net income was $12.6 million, up 13 percent from Q1 2005. Non-GAAP net income for Q1 2006 was $16.2 million, up 44 percent from Q1 2005. Included in both GAAP and non-GAAP net income is a charge for $900,000 related to converting part of the NI manufacturing facility in Austin to office space.