I bought this to replace another contour gauge that was starting to lose pins. Pros of this model: 1) It can be used for contours up to 6 inches - most other models are 5 inches. 2) The pins are firmly installed, so there is less risk of falling out. As other reviewers have pointed out, the pens are close together, to the point where it takes significant effort to move them while copying the outline. However, after applying silicone grease to the pins and body, this issue was largely resolved.
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