Steel / Iron Tripod Socket? Mar 27, 2015 1:58:48 GMT 1 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by jkindred on Mar 27, 2015 1:58:48 GMT 1 Recently purchased a Vickers tripod and cross head. The socket section of the tripod is steel or iron, marked 1943 MMC, and I was curious how common these were.