Group IV.
Plate 12.
SCOURING BOARD
CROSS SECTION AT C-D
TO LOCATE F1 AND F2
1. LOCATE POINT “D”.
2. TAKE “R” = “O-B” AND
DRAW. F1E + EF2 = AB
Group IV.
Plate 13.
COAT HANGER
SECTION
AT A-B
Group IV.
Plate 12.
SCOURING BOARD
CROSS SECTION AT C-D
TO LOCATE F1 AND F2
1. LOCATE POINT “D”.
2. TAKE “R” = “O-B” AND
DRAW. F1E + EF2 = AB
Group IV.
Plate 13.
COAT HANGER
SECTION
AT A-B