Tangent Sight, anonymous, 1845 - 1865 demonstration model. test model Set -up or target that is mounted against the back of the final increases; The support for this is provided with a ridge that grabs in the closure and is tightened from the back with a screw. The design rod is a short square iron rod, on top is pyramid -shaped with grooves through the top; He can move vertically back and forth. Demonstration and or test model. Netherlands iron (metal). brass (alloy)

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Photo credit: © piemags/rmn / Alamy / Afripics
License: Licensed
Model Released: No

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