They were joined by Trading Standards representatives and Tayside Alcohol Problem Service at their pitch in the High Street.
Inspector Callum Leith explained: "We are looking to raise awareness within the community regarding the misuse of alcohol and the damage it causes.
"We're not against drinking of alcohol in moderation. However, there is clear link between excessive alcohol consumption and crime, anti-social behaviour and family problems."
Passers-by were asked to 'take the challenge' to estimate the number of units they consume.

Demonstrating the measuring beaker is Inspector Callum Leith assisted by Jill Wright and Peter Lennon.
Jill Wright from the Tayside Alcohol Problem Service, explained: "There is a misconception about units. People say that they have just had 'one' when, for example, a pint of normal lager is two units while a typical bottle of spirits is between 27 and 30 units.
She continued: "The recommended healthy maximum is 14 units for females and 21 units for males, spaced out across the week with days off in between."
As part of the week-long project Task Force personnel worked alongside Trading Standards officers visiting pubs and off licenses in the town looking for local sellers to sign up sign up to schemes such as Pub Watch and Age Restricted Sales.
Inspector Leith explained that Pub Watch is simply a link between various pubs in the town who can warn other premises of problem customers while the Age Restricted Sales scheme relates to licensees challenging for identification from potentially under-age customers.
Inspector Leith concluded: "These initiatives already have good support and I would encourage all licensees to take part in the schemes."
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