Martha Stewart and EK Success have developed a board that at a much cheaper PRICE!!!

Not only does it provide superior scores, it has increased functionality by providing a scoring channel every 1/8", as well as including an additional tool for perfectly folded envelopes (US sized).

Score flawless, crisp lines on invitations, envelopes, gift boxes, and other projects with this handy tool. Score flawless, crisp lines in seconds. Create invitations, envelopes, gift boxes, and more. Features easy-access storage compartments and includes envelope guide and bone folder.
Easily accessible storage compartments.

INSTRUCTIONS:
[1] Place pre-cut cardstock on the scoreboard surface. For best results,
fold your card so the score line is the outside fold and the bump is
the inside of the fold. Align cardstock with either the left or right
side of the board depending on the instructions of the particular
project.
[2] Hold the paper in place with one hand. With the other hand, hold the scoring tool at a 45 degree angle and run down the length of the paper from the groove at the top to the bottom of the sheet. Using the scoring tool with your other hand, holding it at a 45 degree angle, run down to the bottom of the paper starting at the groove at the top of the board. You should have a perfectly straight fold line.