Is it possible that the lines are at 1 km distances for north to south distances from Montaigu, but the adjustment number is provided to account for the difference in projection methods for east-west, particularly since these 900 something numbers are nearly 1 km, and that if the map were to extend to the equator, your east west curved red line would finally be 1000 meters wide? Leslie From: Maps-L: Map Librarians, etc. [mailto:[log in to unmask]] On Behalf Of Ratliff, Louise Sent: Wednesday, October 19, 2016 10:11 AM To: [log in to unmask] Subject: Re: Need advice about describing a German-language map Hi Leslie, But what do the red lines represent? Louise From: Maps-L: Map Librarians, etc. [mailto:[log in to unmask]] On Behalf Of Wagner, Leslie A Sent: Wednesday, October 19, 2016 7:50 AM To: [log in to unmask]<mailto:[log in to unmask]> Subject: Re: Need advice about describing a German-language map Text in left corner provides a method for numerical adjustment between Bonnescher Projection and Lambert projection. From: Maps-L: Map Librarians, etc. [mailto:[log in to unmask]] On Behalf Of Ratliff, Louise Sent: Tuesday, October 18, 2016 2:13 PM To: [log in to unmask]<mailto:[log in to unmask]> Subject: Need advice about describing a German-language map Hello all, I need some help understanding some projection information on an older map of Belgium that my assistant and I are cataloging: Belgien 1:300000 Verwaltungskarte Umwandlund der Bonneschen Koordinaten in Lambertsche Koordinaten für die Y-Werte I understand the concept, but the map itself shows some lines that I don't know how to describe. A portion of the map is shown in the attached image along with explanatory text. How would I describe this in the bibliographic record? Thanks! Louise Louise Ratliff Social Sciences and Map Catalog Librarian UCLA Library Cataloging & Metadata Center 11020 Kinross Ave. Box 957230 Los Angeles, CA 90095-7230 (310)206-5853