The Thin Wall Test Tube (section B, Figure 1) has Inner Diameter (ID) dimension and tolerance of 11 + 1.5, -0. Minimum dimension of 11 mm. Bushings E-2 and E-3 have Outer Diameter (OD) dimension of 10.72 mm to 11.10 mm. Therefore, a Test tube with an ID at the minimum dimension will not be compatible with a Bushing at the maximum dimension. Proposal to revise maximum OD dimension of Bushings to 10.85 mm. This will guarantee compatibility between the two parts and leave a 0.15 mm clearance even with the worst case scenario.