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    Re: Help W French Surveying Compass With Altitude??
    From: Renee Mattie
    Date: 2005 Apr 28, 16:11 -0400

    It turns out I can see Joel's photos better than I thought I could.
    I think I did a fair job of transcribing the instructions, though I was not
    able to
    translate every single word.  I have not found my French-English dictionary
    yet.
    It is not in any of the boxes I have searched so far!
    
    You can find the results of my work, along with the photos Joel sent me, at
    http://home.comcast.net/~reneemattie/navigation
    
    Since I cannot see the bevel (or is it a mark?) or the table stuck to the
    bottom of the box, I am not sure if this is sufficient to puzzle out how to
    use all of its features.  I did not understand anything about distance off.
    
    Renee
    
    
    
    ________________________________
    
            From: Navigation Mailing List
    [mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM] On Behalf Of Renee Mattie
            Sent: Thursday, April 28, 2005 8:47 AM
            To: NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
            Subject: Re: [NAV-L] HELP W FRENCH SURVEYING COMPASS WITH ALTITUDE??
    
    
            I will attempt a translation of the directions that come with the
    compass.
            My French is pretty rusty.  I will be using freetranslation.com, and
    I will
            be searching for my old French-English dictionary.  The older, the
    better
            in this case, I imagine.
    
            I have already sent Joel the following translation of the final
    paragraph on PENTE.
            I cannot make out every single word because of the curves and marks
    on the page
            and the resolution of the photo.   But I am hoping I will be able to
    make out
            (and translate!) the important ones.
    
                    SLOPE
            Place the marked side of the box
            on the line (??,??,??, etc.) of which
            you want to have the inclination, the vertical limb.
            Read the angle of slope directly on the limb,
            and from it deduct the slope in ?hundredths? at
            the middle of the table.
    
            Renee
    
    
    ________________________________
    
                    From: Navigation Mailing List
    [mailto:NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM] On Behalf Of Yourname Here
                    Sent: Thursday, April 28, 2005 7:22 AM
                    To: NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
                    Subject: Re: [NAV-L] HELP W FRENCH SURVEYING COMPASS WITH
    ALTITUDE??
    
    
                    Thanks for your input Bill,
    
                    I tried that, but there is noway to freeze the pendulum to
    take an accurate reading of what it points to on the scale after you have
    sighted the angle. Also the device doesn't seem to have an up or down
    indication and there are scales on both sides of the rose.
    
                    Thanks much,
    
    
                    Joel Jacobs
                    --
                    Visit our website
                    http://www.landandseacollection.com
    
    
    
    
                            -------------- Original message from Bill
    : --------------
    
    
                            > > The compass card with the scales are printed in
    reverse. For a bearing, you
                            > > view through the black sighting vane with your
    line of vision into a circular
                            > > mirror in which you see the compass card in
    proper orientation, and through a
                            > > clear slit in the mirror which acts as the
    forward sighting vane you select
                            > > the target. There is what I take to be a brass
    pendulum which will point to a
                            > > scale, but to do this, the case has to be placed
    sideways. Doing that makes
                            > > viewing through the sighting vane impossible.
                            >
                            > Suspect you need to sight along the edge of the
    compass to read elevation.
                            > At least that is the way my Silva Ranger works.
    With the Silva, I can
                            > adjust the mirr! or lid to read the scale while
    sighting along the card edge.
                            >
                            > Bill
    
    
    

       
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