Oblique drawing

for grade 7-8 drafting

1. OBLIQUE
DRAWING

2. OBLIQUE DRAWING :
Inanobliquedrawingthefrontviewisdrawn
truesize,andtherecedingsurfacesaredrawnonan
angletogiveitapictorialappearance.Thisformof
projectionhastheadvantageofshowingOneView
(theFrontView)oftheobjectwithoutdistortion.
Generally,thefacewiththegreatestdetailfacesthe
front.
ThistypeofdrawingissimilartoIsometric
drawing.Theonlydifferenceistwoofitsaxesare
perpendiculartoeachothersuchasoneofits
planes(views)isparalleltotheground.
Theangleofelevationoftherecedingsideof
anobliquedrawingisnormallyangledat45
0
from
thegroundline.

3. Types of OBLIQUE Drawing
•Cavalier Oblique
•Cabinet Oblique
•General Oblique
–Therearethreetypesofobliquedrawing.Thereceding
side,orthediagonalaxisisscaleddifferentlyforeachofthe
threetypes.
–Theseobliquedrawingsarethe:

5. CavalierOblique–anoblique
drawingwhereintherecedingsideis
scaledinactualsize.

6. CabinetOblique–anobliquedrawing
whereintherecedingsideishalfthe
measurementoftheactualsize.
Incabinetobliquedrawings,the
recedinglinesareshortenedbyone-halfof
theirtruelengthtocompensatefor
distortionandtoapproximatemoreclosely
whatthehumaneyewouldsee.Itisforthis
reasonthatcabinetobliquedrawingsarethe
mostusedformofobliquedrawings.

7. GeneralOblique–anoblique
drawingwhereintherecedingsideis
two-thirdsofthescaleoftheactualsize.

8. “Cavalier Oblique Drawing”“Cabinet Oblique Drawing”
“General Oblique Drawing”

9. Cavalier Oblique
Cabinet Oblique
General Oblique

10. “Steps in Creating an Oblique Drawing”
1.CreatetheObliqueAxes.2.CreatetheObliqueBox.3.TransfertheViews.4.Analyzethefigure.Determinewhichpointsneeds
tobeconnected.
Connectthepoints.5.Finalizethefigureby:Darkeningtheobject.AndErasingallofthe
UnnecessaryLines.

11. OBLIQUE
DRAWING
presented by
Reymer G. Melendres