Attached is a (very) basic drawing for a part as it is on our print. We're are trying to get an accurate position callout for datums C & D.
Alignment:
Leveled on -A- (Z+)
Rotated to Y+ using -D-
X, Y origin is -B-
SOHCAHTOA values
-C-
side a - 2.50 mm (X minus)
side b - 33.00 mm (Y plus)
side c - 33.09 mm
angle A - 4.33 deg
-D-
side a - 5.00 mm (X minus)
side b - 35.00 mm (Y minus)
side c - 35.36 mm
angle A - 8.13 deg
Since we rotate to -D- would its nominal position be (0, -35.09) or (0, -35)?
What would -C-'s nominal position be?
I think it's rotated values would be:
side a - 7.29 mm (X minus)
side b - 33.00 mm (Y plus)
side c - 33.80 mm
angle A - 12.46 deg
making it's nominal position (-7.29, 33.80)?
The position callout is |0.15|B| for both -C- & -D-
