PERFECT SCRIBING: The TRACER Contour Gauge is a heavy-duty tool designed for larger scale projects designed for easy profile marking on flooring, skirting, pipework, and more. Also comes with a TRACER deep hole construction pencil.MAXIMUM PRECISION: With a lockable mechanism, the Contour Gauge locks into place for precise tracing and the TRACER pencil includes an inbuilt sharpener to maintain accuracy on the go.PROFILE MARKING UP TO 250mm (10\"): The TRACER Contour gauge is perfect for marking up to 250mm (10\") and includes both metric and imperial scalesDEEP HOLE MARKING - The TRACER Carpenters Pencil comes equipped with a 2B Lead that can be fully extended allowing for the user to mark depths of up to 100mm in a 3mm hole or 145mm in a 6mm hole which is perfect for marking through small gaps and drill holes.BUILT TO LAST - Both the Contour Gauge and Deep Hole Construction Pencil were built specifically for the wear and tear of construction sites, giving you a marking solution that lasts.