A strange-looking set of callipers, but like all Hope products, they are designed by a woodturner, for woodturners. These callipers are in frequent use in my workshop when turning bowls. The unique design ensures ease of use and the laser-etched measuring scale makes turning an even wall thickness a breeze. You can see them in action in several of my bowl turning videos on YouTube here: https://www.youtube.com/playlist?list=PLZVlpCJobvAE5KhigLf43Gu38FStNw6FE
