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Sewing Machine Needle Cross-Reference Chart
Curved Needles
Flat or Round Scarf Shank diameter Length to top of eye Length to point      
Curved mm mm mm Other Measurement Source Comments
R/F N 1.32R and 1.20F 41.74 47.47 42, 178 W&W 4 Two thread grooves, one each side. Flat starts 2.66mm from end. Tip of needle is 2.92mm from center line of shank. Curve starts at end of shank and is 24.5mm in length. Shank is 23mm long. #1=.83mm diameter, #1.5=.85mm, #2=.92mm, #2.5=.95

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Needle is still available
Needle I measured that does not fit into any references.
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