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My question is regarding GRR

We are the OEM of Medical devices, We manufacture 2 Products per year. I need to conduct GRR study on a finished product . currently we have only one product.

I have 2 Methods in mind

1) Conducting Nested GRR with 3 Operators and 5 parts ( Considering 5 repeats on a same product as as 5 parts) and 3 repeats

2) Conducting Type 1 gage study with 3 operators instead of 1 operator with 30 repeats.

Please let me know which method should i go with.Suggestion of any other methods will be appreciated.

Thanks in advance