Rail with wooden case for Amsler's integrator
Rail with wooden case for Amsler's integrator
Wooden box containing Amsler's integraph, for calculating the area and first two moments, with one counterweight, three tracer arms, and a guide rail 53" long in its own box
Rail with wooden case for Amsler's integrator
Wooden box containing Amsler's integraph, for calculating the area and first two moments, with one counterweight, three tracer arms.