roysboystoys Posted July 25, 2021 Share Posted July 25, 2021 (edited) I find a lot of gauges that have " Retard" on face, mostly pressure . This is a vacuum / pressure gauge. Face has " Retard" , US Gauge , AD 2734 I cleaned it up some , no name or number on housing , in or out. Has a Buick look to it, but my google skills are lacking. Any one recognize the shape or gauge? Thanks Roy Edited July 28, 2021 by roysboystoys (see edit history) Link to comment Share on other sites More sharing options...
Leif Holmberg Posted July 25, 2021 Share Posted July 25, 2021 (edited) I think the "frame"are mid 20s Packard.(The picture show a 1924 Packard.) Edited July 26, 2021 by Leif Holmberg (see edit history) 1 Link to comment Share on other sites More sharing options...
roysboystoys Posted July 25, 2021 Author Share Posted July 25, 2021 I found this site looking for Packard match. Didn't help but might help someone else. Clusters 1920s - Identifying Instrument Panels (google.com) 1 Link to comment Share on other sites More sharing options...
roysboystoys Posted July 28, 2021 Author Share Posted July 28, 2021 Leif , it sure looks like it. This is a compound gauge with built in " Retard" ( damping) What would a pressure / vacuum gauge be used for on a 1924 Packard? Usually they are used in pumps or refrigeration systems. Power brake? , vacuum fuel tank? water pump? I've never seen a vehicle with one before. Link to comment Share on other sites More sharing options...
Leif Holmberg Posted July 28, 2021 Share Posted July 28, 2021 It looks like a gauge with both vacuum and pressure,but I have no idea where it could have been used for.????? Link to comment Share on other sites More sharing options...
roysboystoys Posted July 28, 2021 Author Share Posted July 28, 2021 54 minutes ago, Leif Holmberg said: It looks like a gauge with both vacuum and pressure,but I have no idea where it could have been used for.????? I posted in the Packard forum , we'll see what develops. Thanks Link to comment Share on other sites More sharing options...
Stude17 Posted July 28, 2021 Share Posted July 28, 2021 2 hours ago, roysboystoys said: Leif , it sure looks like it. This is a compound gauge with built in " Retard" ( damping) What would a pressure / vacuum gauge be used for on a 1924 Packard? Usually they are used in pumps or refrigeration systems. Power brake? , vacuum fuel tank? water pump? I've never seen a vehicle with one before. A vehicle fitted with a supercharger? Link to comment Share on other sites More sharing options...
roysboystoys Posted July 28, 2021 Author Share Posted July 28, 2021 (edited) 20 hours ago, Stude17 said: A vehicle fitted with a supercharger? I can't remember or find any reference to supercharger for Packard. This was my first thought , but 30 pounds boost is highly unlikely. Thanks Edit , I should have quit looking at so many gauges on google. They are almost all 30 pounds pressure, This is 10 pounds at the 3/4 range as Stude17 observed. Could very well be Supercharger. A friend suggested Aviation , he said Packard supplied engines for Aero planes? The housing could have been supplied to other makers? Edited July 29, 2021 by roysboystoys (see edit history) Link to comment Share on other sites More sharing options...
Stude17 Posted July 29, 2021 Share Posted July 29, 2021 (edited) Although the gauge might read 0-30 psi by the way it is calibrated I would suggest it is designed to show the range 0-10 psi very accurately and would be used on equipment ( engine supercharger?) to measure pressure in this range. Edited July 29, 2021 by Stude17 (see edit history) 1 Link to comment Share on other sites More sharing options...
roysboystoys Posted July 29, 2021 Author Share Posted July 29, 2021 (edited) 3 hours ago, Stude17 said: Although the gauge might read 0-30 psi by the way it is calibrated I would suggest it is designed to show the range 0-10 psi very accurately and would be used on equipment ( engine supercharger?) to measure pressure in this range. Thanks for the observation . I edited my last post. Seems likely now.? Edited July 29, 2021 by roysboystoys (see edit history) Link to comment Share on other sites More sharing options...
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