Tomlin, 27, will be included in interim-boss John Pemberton's squad for Saturday's home game against Birmingham
"We've been monitoring his situation at Bournemouth and it's great that we've been able to bring him on board," Pemberton said.
"He wants to play football and he'll bring us ability and experience.
"We've already spoken about the way we want to set the team up with a tighter backline but we can't neglect the fact we need to score goals
"
Tomlin was signed by Peterborough from Rushden & Diamonds in 2010 before he joined Middlesbrough, initially on loan, in January 2014
Bournemouth paid £3.5miilion to sign Tomlin in the summer following their promotion to the Barclays Premier League, but he has been restricted to one goal in 10 appearances this season
Source : PA
Source: PA