** Shares of engineering firm Renishaw RSW.L fall nearly 5% to 3,540p
** Stock among top losers on FTSE 250 index .FTMC, which is up 0.23%
** Q1 FY26 revenue declines to 170.8 mln pounds ($229.23 million) from 173.9 mln pounds last year
** "Regionally, EMEA was the weak-spot, with OCC revenue -20.5%, on soft demand for industrial metrology products and a negative impact from ERP implementation, which is expected to be recovered during 2Q," says Jefferies
** YTD, including sessions move, stock up nearly 10% vs sub-index's nearly 8% rise
($1 = 0.7451 pounds)
(Reporting by Krisha Bhatt)