Hall's Magnetic Mineral Rod / Jacob's Rod

hothardrocks

Jr. Member
Oct 10, 2023
20
74
I had only heard of the Jacob's Rod before then I found a whole set with the instruction book on eBay. The instruction book looks very similar to the book posted on this thread:

"A Translation From The French Of A Rare And Curious Work, A. D. 1693, On The Art Of Finding Springs, Mines, And Minerals By Means Of The Hazel Rod"

The print on the book is too fine for me to read comfortably so I scanned it in. A very interesting read so far. I'll see if I can figure it out.
Has anyone come across one of these before?
 

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