Scrum machine

A scrum machine, or scrummaging machine, is a padded, weighty device against which a pack of rugby forwards can practice scrummaging and rucking.

[1] The purpose of the scrum machine is to provide teams with a safe tool with which to improve the strength and skills of their players.

[2] The ideal engagement of a pack into a scrum is a simultaneous movement in the hit, shunt and drive.

Even small packs that coordinate in this fashion and hit 'on the beat' can control their scrums consistently.

[citation needed] A similar piece of equipment called a blocking sled is used by American football players.