@@ -93,9 +93,13 @@ var buttonsClass = {

         if (!contains(me.device.windows.window, menu_label ~ '-bg')) {

             var level_min = 13;

             var level_max = 7;

-            var levels = [ sprintf('  % 2u >', level_max) ];

+            var range_from_level = func (l) {

+                var r = (me.device.display.display.get('view[1]') / 2 * 84.53 * math.cos(data.lat) / math.pow(2, l)) * units.distance.from_nm;

+                return sprintf('% 3u%s', math.round(r, r > 10 ? 5 : 1), units.distance.from_nm == 1 ? 'NM' : 'km');

+            }

+            var ranges = [ sprintf('  %s >', range_from_level(level_max)) ];

             for (var i = level_max + 1; i <= level_min; i += 1)

-                append(levels, sprintf(i < level_min ? '< % 2u >' : '< % 2u  ', i));

+                append(ranges, sprintf(i < level_min ? '< %s >' : '< %s  ', range_from_level(i)));

             var orientation = [ '  NORTH UP >', '<  TRK UP  >' ];

             if (getprop('/instrumentation/gps/route-distance-nm') != nil)

                 append(orientation, '<  DTK UP  >');

@@ -106,18 +110,15 @@ var buttonsClass = {

                     [

                         {text: menu_label, type: 'title'},

                         {type: 'separator'},

-                        {text: 'ZOOM LEVEL', type: 'normal'},

-                        {text: sprintf('%s % 2u %s',

-                                me.device.data.zoom > level_max ? '<' : ' ',

-                                me.device.data.zoom,

-                                me.device.data.zoom < level_min ? '>' : ' '),

+                        {text: 'RANGE: ', type: 'normal'},

+                        {text: ranges[me.device.data.zoom - level_max],

                          type: 'selected|end-of-line',

-                         choices: levels,

+                         choices: ranges,

+                         level_max: level_max,

                          callback: func (id, selected) {

-                             var z = me.device.windows.state[id].objects[selected].text;

-                             foreach (var c; [' ', '<', '>'])

-                                 z = string.replace(z, c, '');

-                             me.device.data.zoom = z;

+                             me.device.data.zoom = vecindex(me.device.windows.state[id].objects[selected].choices,

+                                                            me.device.windows.state[id].objects[selected].text)

+                                                   + me.device.windows.state[id].objects[selected].level_max;

                              me.device.map.changeZoom();

                              me.device.map.update();

                          }