This is not a CAD drawing, it was generated by CMM, note dimensions in lower part of page.

1. Date February 17, 2009
Calypso
Carl Zeiss Order * order *
4.2.06
Department:
Part Number CMM Drawing No. Operator Master
266 CONT_G2 * drawingno *
Removed
Removed Signature:
Measurement Plan
#40 Flatness
UM25 Base Nozzle Full 1071430-08
Z
Don't you wish your supplier could QC like this, generated from inspection.
and prove it!!!
Y
X
1
4
2
Note the dimensions
3 X Y Z
Edges 1 0.00085 0.02749 0.47042
2 - 0.00052 0.02749 - 0.39986
3 - 0.00047 0.60010 - 0.39986
4 0.00090 0.60010 0.47042
0.00019 0.02987 0.23656
10.0um Max 0.00014
Min - 0.00014 0.00087 0.31182 0.46511
Magnification 1000.0
No Identifier Actual Tol. Points Speed PrRadius F.Typ L-C UPR
1 #40 Flatness 0.00046 0.00050 4783 0.01579 Spline 2.5