The MK 15 was designed to be the successor of the MK 10 but wasn´t sold very long (funnily the MK 10 survived and was sold for some years more..) Seems that there were some problems with patents and the next first stage - MK 20 - followed soon. The MK 15 had the advantage to adjust the IP from outside - this feature disappeared and wasn´t seen until the MK 25. When the MK 20 was established, Scubapro offered an upgrade-kit from MK 15 to MK 20.
Ports: 2 HP 7/16", 5 LP 3/8"
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