An apparatus for use with a backup counter module, the apparatus having: a housing having a first end for coupling the housing to a gas meter body, and a second end for coupling an electronic counter module to the housing; and the second end having an inner surface with at least two sets of backup counter module engagement features for securing an output end of a backup counter module in one of at least two backup counter module positions. The housing may be coupled to a first gas meter body with a backup counter module positioned within the housing in one of the at least two backup counter module positions. The housing may alternatively be coupled to a second gas meter body with the backup counter module positioned within the housing in another of the at least two backup counter module positions.