Thieves cut through a fence and stole a line-marking machine in Dandenong South.
Greater Dandenong CIU is investigating the incident, which occurred at a Capital Drive factory between 5pm on Friday 25 May and 6pm on Sunday 27 May.
Police said the thieves cut a section of six-foot fence on Kitchen Road to access the property.
They released images of the unique line-marking machine in the hope that someone recognises it or has information about the incident.
Call Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au with any information and quote incident number 180185364.