Measure from the spring you removed. If any tension remains, release it safely before measuring.
Step 1: Inside Diameter
Confirm the cone stamping or measure the inner opening.
Example measuring the inside diameter of a torsion spring.
Step 2: Wind Direction
Look at the winding cone. Left wind appears to wrap counter clockwise at the cone. Right wind wraps clockwise. Installed position is opposite sides of the center bracket.
Example identifying left wind vs right wind spring direction.
Step 3: Wire Size
Count 20 coils and measure end to end. Convert that length to a wire size using a chart.
Wire size chart to convert a 20 coil measurement into a wire size.
Step 4: Overall Length
Measure the relaxed spring length. Include broken pieces and round to the nearest inch.
Example measuring the full unwound length of a torsion spring.
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