I believe this Gurley Engineers Solar Transit was made circa 1895.
Gurley apparently did not sell many Engineers Solar Transits. I have some production information for solar transits on my Gurley Maker Webpage. The information is incomplete, but it is a good representation of what Gurley was selling. From 1878 to 1885, excluding 1879, Gurley sold a total of 207 solar transits. Of the 207 STs, Gurley sold 164 Light Mountain STs, 30 Surveyor STs, and 13 Engineers STs. So
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