Sorry to hijack your thread LCFrigon, but on the topic of SPG's, what do you guys think about using this SPG as a primary gauge?
Tusa SCA-120 Mini-Pressure Gauge, Dive Gauges, Tusa, Tusa SCA-120 Mini-Pressure Gauge
As fireflock suggested, since I just purchased the Oceanic Geo, so I only need a pressure gauge.
I also thought this might be a good buy:
Tusa SCA 240 2 Gauge Console - Pressure & Compass, Dive Gauges, Tusa, Tusa SCA 240 2 Gauge Console - Pressure & Compass