I have a datum surface set as -A-. another surface about .375" above that. I check the second surface for parallelism to -A- and get an output of .00154". Then I go back and set the second surface as datum B and check -A- to that datum and get an output of .00125". Why the difference? Is this to be expected?

Joshua A Farmer
Engineering Technician/ Inspector
Whirlpool Corporation/ Specialty Products Division, KitchenAid
1701 KitchenAid Way
Greenville, Ohio 45331
Phone: (937) 548-4126 Ext. 207
Fax: (937) 547-2850
Email:Josh_A_Farmer@email.whirlpool.com