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	Part No.25 Pinion wheel 3/4" x 1/4" (keyway fixing to rod) Part No.26 Pinion wheel 1/2" x 1/4" (keyway fixing to rod) Part No.26 Pinion wheel 1/2" x 1/4" (keyway fixing to rod) Part No.27 Gear wheel 50t. (1911 patent fixing) Part No.27a Gear wheel 57t. (old style fixing) Part No.28 Contrate wheel 1.5" dia. (1911 patent fixing) Part No.29 Contrate wheel 3/4" dia. (old style fixing) Part No.129 Rack segment 3" dia. Part No.180 Gear ring 3.5"
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