Follow these given below steps to print Pure weight on bill format:---
1.Go to MASTER > MARGSETUP > SELF FORMAT > Select invoice format-98 [DMP]/99[GUI]
2.Feed format name > BILL FORMAT > ITEM > Press F1 key > Search "Pure"> Select option of "Jewelers weight pure(Gold+Silver)" > Press ENTER key.
3.Now Press F3 key for apply command > Use command (SB_JWNWET,10,3) > Press CTRL+W > Click on SAVE > Press ESC key to EXIT.