I don't know the name, but I believe the moveable "attachment point" is where the hanging loop clamps to the dial plate. Moving that will rotate the dial and altitude scale relative to vertical.
Dave Sent from my iPhone > On Jun 1, 2014, at 3:13 PM, Steve Lelievre <steve.lelievre.can...@gmail.com> > wrote: > > Hi folks, > > http://www.pinterest.com/pin/301178293801331061/ > > What type of dial is this; I realize it's a form of altitude dial, but is > there a specific name for it? > > The accompanying note states that the dial can be adjusted for latitude by > moving "the attachment point". I don't understand which part of the mechanism > does that. Can anyone explain it for me? > > Lastly, I'm appreciate references for articles or webpages that discuss these > dials - history and mathematics. > > Thanks, > Steve > > > > > > > > --------------------------------------------------- > https://lists.uni-koeln.de/mailman/listinfo/sundial > --------------------------------------------------- https://lists.uni-koeln.de/mailman/listinfo/sundial
