|The Sewline pencil has a nice rubbery grip and operates just like any mechanical pencil.|
|Lead is advanced by clicking on eraser.|
|It is extremely easily to create straight lines, or to draw any shape you like.|
|Twist metal end to advance eraser.|
|Lines after being erased with damp cloth|
PROS: The Sewline does seem to be a solid, easy to use marking tool! I love the clean, smooth, fine marks it makes which are both super visible and quite easy to remove.
CONS: The only issue I can see with this product is that the lead gets used up extremely quickly, so refills may need to be purchased often.