This Silvine duplicate memo book is a great way of creating duplicates of written notes for receipt purposes or for any form of note that requires a duplicate copy. They measure 126mm x 107mm so it is a handy size to be kept in a pocket or carried easily in a bag. Great for self employed field based workers giving quotes, receipts or taking order details. There are 2 blue carbon sheets which are placed between the top and duplicate copy when in use. They are numbered 1 to 100 so that they can be easily matched up afterwards, and ruled to keep text neat and also perforated for easy removal from the side bound pad.. 126mm x 107mm. Index sheet. Ruled feint. Numbered 1 to 100. Perforated . 2 blue carbon sheets