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An attached gas-check was a copper plate that was physically attached to the base of a studded projectile of rifled muzzle-loading ("RML") artillery, sealing the escape of gas between the projectile and the barrel.
- RML 12.5in Studded Palliser Shell Mk III with Attached Gas-Check Mk II
- RML 12.5in Studded Common Shell Mk I with Attached Gas-Check Mk II
- RML 12.5in Studded Shrapnel Shell Mk I with Attached Gas-check Mk II
References
Attached gas-check Wikipedia(Text) CC BY-SA