Gage R&R for measuring tape for some wire length inspection

R

Richard

We are using the measuring tape for some wire length inspection. Do we have to do the gage R&R for these tape? We have a spec tolerance +/-1 mm. A tape¡¯s accuracy is 1mm, so the min. measuring error is 0.5mm. And then this measure system¡¯s error will be 25% (0.5/2) at least. So, We can not use ruler for any measurement less then +/-3mm (8.3%).
Please advise.
Thanks
 
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