diff --git a/extension/locale.txt b/extension/locale.txt
index e3798b5..19fb307 100644
--- a/extension/locale.txt
+++ b/extension/locale.txt
@@ -21,8 +21,7 @@ Solid region (copper fill / keepout, board cutout) = Fläche (copper fill / keep
 Track (board outline, silk) = Linien (Umriss, Beschriftung)
 (curves will be broken up into segments) = (Kurven werden in Segmente geteilt)
 Curve segmentation accuracy (Track import only) = Genauigkeit für Kurven-Segmente (Linien-Import)
-Import scale (EasyEDA base unit is 0.1 inch) = Skalierung (EasyEDA verwendet 0.1 Inch als Basis-Einheit)
-Import origin (svg origin will be placed here) = SVG Ursprung an dieser Stelle plazieren
+Import scale (EasyEDA base unit is 0.01 inch) = Skalierung (EasyEDA verwendet 0.01 Inch als Basis-Einheit)
 err_file_not_supported = Dateityp nicht unterstützt, bitte .svg wählen
 err_no_paths_found = Keine path-Tags gefunden 😕
 err_parsing_all_paths = Fehler beim parsen der path-Tags, siehe Konsole für Details 😕
diff --git a/extension/main.js b/extension/main.js
index 10e4d50..d7df680 100644
--- a/extension/main.js
+++ b/extension/main.js
@@ -15,6 +15,7 @@ var svgDocument = '';
 var svgPaths = [];
 var svgImportLayer = 1;
 var unknownCommandFlag = false;
+var svgImportUnitsSet = false;
 
 var dlg = api('createDialog', {
 	title: "SVG Import",
@@ -51,7 +52,7 @@ var dlg = api('createDialog', {
         </div>
     </fieldset>    
     <fieldset>
-        <legend class="i18n">Import scale (EasyEDA base unit is 0.1 inch)</legend>
+        <legend class="i18n">Import scale (EasyEDA base unit is 0.01 inch)</legend>
         <div>
             <input type="number" step="any" name="import-scale" id="import-scale" value="1" size="4" style="width:8em">
             <a class="l-btn" cmd="extension-svgimport-set_mil"><span class="l-btn-left"><span class="l-btn-text">mil</span></span></a>
@@ -131,12 +132,14 @@ api('createCommand', {
 	},
 	'extension-svgimport-open' : () => {
         getOffsets();
-        uiUpdateLayerOptions();
+        initUnits();
+        uiUpdateLayerOptions();        
         dlg.dialog('open');
         dlg.dialog('expand');
     },
 	'extension-svgimport-openfile' : () => {
         getOffsets();
+        initUnits();
         uiUpdateLayerOptions();
         dlg.dialog('open');
         dlg.dialog('expand');
@@ -147,11 +150,11 @@ api('createCommand', {
         uiDisplayImportScale();
     },
     'extension-svgimport-set_inch' : () => {
-        setSvgImportScale(10);
+        setSvgImportScale(100);
         uiDisplayImportScale();
     },
     'extension-svgimport-set_mil' : () => {
-        setSvgImportScale(0.01);
+        setSvgImportScale(0.1);
         uiDisplayImportScale();
     },
     'extension-svgimport-openfiledlg' : () => {
@@ -194,6 +197,15 @@ api('createToolbarButton', {
 	]
 });
 
+function initUnits() {
+    if(svgImportUnitsSet) return;
+    svgImportUnitsSet = true;
+    var config = api('editorCall', 'getConfig');
+    if(svgImportScale==1 && config.canvas.unit == 'mm') api('doCommand','extension-svgimport-set_mm');
+    if(svgImportScale==1 && config.canvas.unit == 'inch') api('doCommand','extension-svgimport-set_inch');
+    if(svgImportScale==1 && config.canvas.unit == 'mil') api('doCommand','extension-svgimport-set_mil');
+}
+
 function uiDisplayImportFlattenAccuracy() {
     $('#extension-svgimport-flatten-accuracy').val(svgImportScale);
 }