diff --git a/extensions/fablabchemnitz/triangle/triangle.inx b/extensions/fablabchemnitz/triangle/triangle.inx
index fe6df16..45de346 100644
--- a/extensions/fablabchemnitz/triangle/triangle.inx
+++ b/extensions/fablabchemnitz/triangle/triangle.inx
@@ -10,12 +10,12 @@
         <option value="pc">pc</option>
         <option value="in">in</option>
     </param>
-    <param name="s_a" type="float" min="0.01" max="10000" gui-text="Side Length a:">100.0</param>
-    <param name="s_b" type="float" min="0.01" max="10000" gui-text="Side Length b:">100.0</param>
-    <param name="s_c" type="float" min="0.01" max="10000" gui-text="Side Length c:">100.0</param>
-    <param name="a_a" type="float" min="0" max="180" gui-text="Angle a (deg):">60</param>
-    <param name="a_b" type="float" min="0" max="180" gui-text="Angle b (deg):">30</param>
-    <param name="a_c" type="float" min="0" max="180" gui-text="Angle c (deg):">90</param>
+    <param name="s_a" type="float" precision="3" min="0.010" max="10000.000" gui-text="Side Length a:">100.0</param>
+    <param name="s_b" type="float" precision="3" min="0.010" max="10000.000" gui-text="Side Length b:">100.0</param>
+    <param name="s_c" type="float" precision="3" min="0.010" max="10000.000" gui-text="Side Length c:">100.0</param>
+    <param name="a_a" type="float" precision="3" min="0.000" max="180.000" gui-text="Angle a (deg):">60</param>
+    <param name="a_b" type="float" precision="3" min="0.000" max="180.000" gui-text="Angle b (deg):">30</param>
+    <param name="a_c" type="float" precision="3" min="0.000" max="180.000" gui-text="Angle c (deg):">90</param>
     <param name="mode" type="optiongroup" appearance="combo" gui-text="Mode:">
         <option value="3_sides">From Three Sides</option>
         <option value="s_ab_a_c">From Sides a, b and Angle c</option>