Record service call information on a 2-part form in a convenient spiral bound booklet. Carbonless with white original and canary duplicate. Four message slips per page. Shaded area with check-off boxes for work completed. Stop card prevents write-through. Copy remains in book as permanent record. Two-part carbonless duplicates. Form Type Details: Invoice/Receipt; Dated: No; Forms Per Page: 4; Forms Per Page Layout: Horizontal/Vertical: Two Across, Two Down.