Does it have measurements along the side?

There are no measurements unfortunately

Can anyone give me the profile measurements - the cross section sizes.

My 40cm curve has a lipped base like a normal ruler and measures 12.5mm. The width at the top of the square section is 9mm, and the overall height of the flexible curve is 10mm. I would probably guess that the 60cm curve would have the same cross sectional dimensions.

How wide is the curve across? I am trying to find something 5/8" for seam allowances!

The curve is 12mm or approximately half inch wide.

Would it be suitable for drawing ellipses i.e. Car and engin wheels ?

I'm unclear why you would want to draw an elipse as wheels as car wheels are round. If you want to draw the actual circumference of a car wheel, then use a piece of string from the centre of the wheel to the edge of the wheel. Attach one end of the piece of string to a pin, and the other end to a pencil and use it like a geometry compass to draw a perfect circle the same size as your wheel.

Manufacturer	Helix
Brand	Helix
Model Number	U46010
Product Dimensions	19.1 x 11.4 x 1.3 cm; 110 g
Colour	Blue
Cover Material	Polyvinyl Chloride (PVC)
Shape	Rectangular
Material Type	Alloy Steel, Polyvinyl Chloride (PVC)
Number of Items	1
Size	60L x 4.5W cm
Paper Finish	Glossy
Manufacturer Part Number	U46010
Item Weight	110 g

Helix 60cm Flexible Curve, Blue

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