In post #401924, I indicated that even though the Boyle Dayton sales literature showed an arrow type of indicator that I never have found any picture of a BD with anything other than the shield shape we are all familiar with. I finally found an old photo.
Appreciate the work you've done, Tim. I've enjoyed following the thread.
I meant to post these photos awhile ago, but never got around to it... was wondering if you've seen these markers before? Not sure what the pump make is either. In the photo with the two pumps, only the NAVY has these markers.
Awesome photos!!! On 3-13-2013 I posted the patent for this indicator under the heading of Indicator ideas that didn't survive. I also said "Below are some patents pictures of Indicators that probably were never put into production". Boy was I wrong.