An endoscope device comprising: a handle ; a shaft projecting from the handle, wherein the shaft includes a proximal portion and a distal portion relative to the handle; a flexible tip coupled to the distal portion of the shaft; and a pair of pull wires extending from the handle portion through the shaft portion and coupled to the flexible tip, wherein the handle portion includes a control wheel assembly coupled to the pair of pull wires, wherein the control wheel assembly comprises at least two control wheels , wherein each of the at least two control wheels are capable of independent rotation to provide accurate tensioning of the pair of pull wires during assembly of the endoscope device, wherein at least one of the at least two control wheels comprises a central shaft characterized in that said at least one of the at least two control wheels comprises a serrated outer periphery , and in that the handle portion further comprises: a cylindrical control wheel boss configured to receive the central shaft of the at least one control wheel therein, and a cylindrical tensioning boss configured to receive a tensioning pin to engage the serrated outer periphery, and wherein mating engagement of the serrated outer periphery of the at least one control wheel with the tensioning pin prevents free rotation of the central shaft of the at least one control wheel within the control wheel boss. a handle ; a shaft projecting from the handle, wherein the shaft includes a proximal portion and a distal portion relative to the handle; a flexible tip coupled to the distal portion of the shaft; and a pair of pull wires extending from the handle portion through the shaft portion and coupled to the flexible tip, wherein the handle portion includes a control wheel assembly coupled to the pair of pull wires, wherein the control wheel assembly comprises at least two control wheels , wherein each of the at least two control wheels are capable of independent rotation to provide accurate tensioning of the pair of pull wires during assembly of the endoscope device, wherein at least one of the at least two control wheels comprises a central shaft characterized in that said at least one of the at least two control wheels comprises a serrated outer periphery , and in that the handle portion further comprises: a cylindrical control wheel boss configured to receive the central shaft of the at least one control wheel therein, and a cylindrical tensioning boss configured to receive a tensioning pin to engage the serrated outer periphery, and wherein mating engagement of the serrated outer periphery of the at least one control wheel with the tensioning pin prevents free rotation of the central shaft of the at least one control wheel within the control wheel boss. a cylindrical control wheel boss configured to receive the central shaft of the at least one control wheel therein, and a cylindrical tensioning boss configured to receive a tensioning pin to engage the serrated outer periphery, and wherein mating engagement of the serrated outer periphery of the at least one control wheel with the tensioning pin prevents free rotation of the central shaft of the at least one control wheel within the control wheel boss. <EOS>