It's often said that the Aerometric (squeeze-filling) Parker 51s of the late '40s to early '60s are virtually foolproof, and that even long-neglected examples usually need no more than to be cleaned out by repeated filling and emptying. There is some truth to this, but Aerometric 51s do have their vulnerabilities -- and there are good reasons to have one properly serviced for best results.
10 окт 2022
