As usual ctopher, ewh and MechCT have my complete agreement.
The goal of any drawing is clear, concise communication. Views, dims, tols, notes, etc should be chosen with that in mind. After doing your best to accomplish that including the application of industry and company standards, there is a simple test to see how well you've done. If the fabricator doesn't understand the drawing and calls with a question, the drawing is incorrect or incomplete.
Regards,
RedPen
Senior Designer/Lead Checker
SW2005, SP3.1; Pentium 4, 3.4GHz, 2GB;
NVIDIA Quadro FX1200; XP Pro, 2002, SP2