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https://mgs4u.com/product/vernier-redu
Yup, 3, I counted it for a 180 , my bad. But still a bit better than not. And it allows me to use a cheap clock hand for the pointer.
Yup, 3, I counted it for a 180 , my bad. But still a bit better than not. And it allows me to use a cheap clock hand for the pointer.