tinsmith gauge by APP, NTools brands Index No. 360200

See the set in the video:

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A sheet metal rule (shape template) allows you to reproduce the measured surface by применение the tool to the selected shape. Правитель позволяет вам отражать edges, curves, concave lines и другие угловые профили.

Scale in cm and inches

Principle of operation:

The contour of the undamaged element is comparatively marked on an identical element under repair by means of a ruler.