I can be of assistance here. They are large - very large compared to 28mm scale models.
From left to right - Zombicide Zombie next to Boromir (GW LotR), a tape measure, current Warhammer Empire crossbowman, Hasslefree miniatures Wolsey, and the current best range for zombies Mantic.
On some of the pics a 1p coin has been placed under the zombicide model to raise its feet to the same level as the models on slotta bases.