OO/HO TRACK PENCIL HOLDER

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This tool has become an indispensable asset for me, its simplicity is truly remarkable. I've lost count of the number of times I've had to painstakingly follow a piece of track to mark out where I want to lay the underlay, or carefully measuring and marking the curved form-work to lay the track. Of course, one can't have a set of radius curves for every size on hand, so this ingenious device pairs perfectly with the OO/HO FLEXITRACK CURVE FORMING CLAMPS found at http://www.thingiverse.com/thing:2023001, allowing you to create a custom radius template of any size you desire, and its uses extend far beyond model railways.