uselabo
-7 15  setxrange
-4 9 setyrange
30 setxunit

2 0 () (Burette) bbpict
-1 0 (Entonnoir) bbpict
-5 0 (Pipette) bbpict
6 0 (Cristallisoir) bbpict 
12 0 (TubeRenverse) bbpict 
12 0 (ReposeTube) bbpict 

setCourierBold
   (Burette) 2 -3 dctext
   (Pipette) -5 0 dctext
   (Cristallisoir) 6 0 dctext
   (Entonnoir) -1 0 dctext
   (TubeRenverse) 12 0 dctext