Rodman gun
Rodman gun is a columbiad or artillery family.
Also recorded as Rodman cannon.
Overview
Series of American Civil War–era columbiads designed by Union artilleryman Thomas Jackson Rodman.
In detail
Rodman gun is a columbiad or artillery family.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Rodman gun”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q7356817: Rodman gun
Consult the source