diff --git a/projet_nsi.py b/projet_nsi.py
index 3aa1787..c7032d7 100644
--- a/projet_nsi.py
+++ b/projet_nsi.py
@@ -1 +1,12 @@
 import tkinter as tk
+float i : pouces
+float m : millimètre
+def callback(valeure en pouce ou en milimetre?):
+    if (i):
+        convert to(i)
+    else:
+        (m) 
+        convert to (m)
+
+s = Spinbox(fenetre, from_=0, to=100000000000000000000000000000000)
+