130 Geometric Dimensioning and Tolerancing 25. Give the location dimensions between the datum target points B1, B2, and C1. _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ Refer to the print of the DOUBLE V-BLOCK found on page 440. 26. Identify the datum reference frame. _______________________________________ 27. Describe Datum D. ______________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 28. Give the dimension from Datum C to the bottom of the 1.60 wide slot. _______________________________________________________________________ 29. Give the location dimension to the ∅12.70/12.65 feature from Datum B. _______________________________________________________________________ 30. Give the location dimension to the ∅12.70/12.65 feature from Datum C. _______________________________________________________________________ Refer to the print of the BRACKET ASSY-EL GIMBAL found on page 445. 31. Give the location dimension from Datum D to the three ∅.109+.004/–.001 COUNTERSINK ∅.172X100° features. ______________________________________ 32. Describe Datum B. ______________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 33. Describe Datum C. ______________________________________________________ _______________________________________________________________________ _______________________________________________________________________ 34. What is the wall thickness of the material? _________________________________ 35. Give the vertical location dimension from Datum B to the three .086-56UNC-2B features. _______________________________________________________________ _______________________________________________________________________ Refer to the print of the FEMORAL A-P SAW GUIDE STD found on page 446. 36. Describe Datum A. ______________________________________________________ _______________________________________________________________________ 37. Describe Datum B. ______________________________________________________ _______________________________________________________________________ 38. Describe Datum C. ______________________________________________________ _______________________________________________________________________