supply of train signal register opt-28train signal register opt-28,train signal register opt-28 [r]. 1] size: a/3 [ 30.5 cms x 43 cms plus/minus 0.5 cms]. 2 ] unit: each book of 100 leaves. 3] numbering : single no. at one place in red ink. 4] printing : both sid e in black ink. 5]text: bilingual [ hindi and english ] . 6] paper: 70 gsm white map litho paper. 7] cover paper: 90 gsm brown craft paper. 8] binding: three wire stitches side at left with cover. 9] proof: it sho uld be approved by consignee or his authorized representative before final printing. [ warranty perio d: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]