| http://www.w3.org/ns/prov#value | - Under normal conditions, that is when is the test head is attached to the test head mount and the counterbalance (not shown) is attached to cable 2410, the weight of the test head and counterbalance compensate one another such that the screws 3134 are approximately centered in slot 3136 and neither pawl 3132 engages gear 3130, thereby allowing the operator to lock and unlock the main arm 736 at wi
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