Figure 55. Measuring the sphericity of the bonded 66-inch-diameter capsule 

 with a template having a nominal radius of 33 inches. 



The large-scale acrylic plastic capsule was dimensionally checked 

 (Figures 55 and 56) in the same manner as the scale models by using a 

 template, dial gage, feeler gages, and caliper mounted micrometers. All 

 the dimensional control data taken on individual pentagons prior to assembly, 

 and subsequently after bonding and annealing of the large-scale acrylic plastic 

 hull has been included in this report (Appendix A) to serve as a standard of 

 comparison for (1) future operational large-scale NEMO hulls and (2) show 

 the effect scaling up models has on dimensional deviations. The dimensional 

 control data of the large-scale NEMO hull can be summarized here by stating 

 that the wall thickness and internal sphericity of individual pentagons prior 



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