This Silvine duplicate memo book is a great way of creating duplicates of invoices for receipt purposes or for any form of note that requires a duplicate copy in an invoice template. 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 or giving quotes. 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. Details for Date, to &, from, VAT and amount. Perforated . 2 blue carbon sheets