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The CTMD trolley has a retraction lever to allow the user on track to retract the gauge
through switch and crossing. The trolley uses a spring to self-align in the running rails, the
gauge is in its released position when the lever is towards the right as shown in Figure 12.
Figure 12 - Fully Extended
The gauge is in its retracted position when the lever is towards the left as shown below:
Figure 13 - Fully Retracted
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