According to a precision assembly technique, a first subassembly is precisely aligned relative to {TAIL ~ a plurality} of alignment features in an alignment fixture and {HEAD ~ at least three non coplanar flexures} having complementary alignment features are located with respect to corresponding alignment features on the alignment fixture and mechanically attached to the first subassembly 
According to a precision assembly technique , a first subassembly is precisely aligned relative to { TAIL ~ a plurality } of alignment features in an alignment fixture and { HEAD ~ at least three non coplanar flexures } having complementary alignment features are located with respect to corresponding alignment features on the alignment fixture and mechanically attached to the first subassembly
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