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> Hygro-thermograph chart recorder bendix model 594
Hygro-thermograph chart recorder bendix model 594
Designed to have a paper chart mounted on the cylinder. I don't know how old these units are.
These units are technically in poor condition. A quick check on both units shows that the mechanisms that operates the pens moves but whether they function properly or accurately is unknown. There is only one chart drum as shown. The winding key is intact and it feels as if the spring is good. I didn't wind it up. Appears as if the red is spilled ink.
Also the units are dirty and scratched.
Good for parts or experimentation.
