It shows the constant of proportionality between the scale drawing and the real-life object.
A scale drawing.
It is a scale drawing
To simplify a scale, convert to the same units, drop the units and divide by their highest common factor: 1 cm = 10 mm drawing : object = 8 mm : 1 cm → 8 mm : 1 × 10 mm → 8 mm : 10 mm → 8 : 10 → 4 : 5 → object is larger than scale drawing.
It is the scale ratio or scale factor
An underline on a dimension means that it is not to scale.
The answer depends on what aspect of the scale drawing you wish to calculate.
it depends of the scale of the drawing
# is the ratio of the demensions in the drawing to the corresponding actual dimensions. The scale factor for a scale drawing is the ratio of the dimensions in the drawing to the corresponding acual bimensions.
scale questions
Not all drawings are done to scale, sketches of buildings and people for instance. However if it is a technical drawing the draughtsman/woman will state on the drawing the scale used.
A drawing of the object in scale.
a scale drawing.
The scale factor of a scale drawing is the ratio of any length in the drawing to the true corresponding length in the "real" object.
scale drawing
The scale drawing in math is fun. You have to know the challenge level of the basic Mathematics.
The scale indicates how many units of length of the actual object are represented by each unit of length in the drawing.
It depends on the purpose and type of the drawing. If the scale would be necessary for proper interpretation of the drawing (e.g. mechanical drawing, plans for a building) then yes. If the scale would not help in interpreting the drawing (e.g. electronics schematic, software data flow diagram) then no.