297x210 210x297 320x460 148x210
Answer Discuss in Comment
2 4 8 16
2 8 16 4
vertical inclined parallel all of the above
easy to carry for fixing of drawing paper with the help of drawing pin to match with T-square all of the above
2H and HB H and 2HB H and HB 2H and 2HB
B 2H 2B H
"Scientists dream about doing great things. Engineers do them."