As of sometime in the 80's, Ericson was installing the Ritchie SP-5C Binnacle Mount GlobeMaster on top of many many YS steering pedistals. That is the stock model for our wheel-option '88 Olson, and I have seen this on other Ericsons of the era.
If you can source one at a decent discount I would reccommend it for ease of reading. It should be an easy install on any "YS" Yacht Specialties (or newer Edson) pedistal.