One of only two known Taylor-Hobson pantograph engraver known to have been advertised as a die sinker (the other was the model JR) 3DS was current from the 1930s until the 1950s. A substantial machine with a 58" x 52" footprint and standing 63 inches high, the 3DS weighed a considerable 1 ton gross.
Measuring a useful 15" x 8" (380 mmx 200 mm) both the three T-slot work and copy tables had travels of 12" (310 mm) horizontally, 8" (200 mm) in traverse and 9" (230 mm) vertically - though a larger auxiliary copy table 18" x 14.5"380 mm x 200 mm) was available at extra cost. It's likely that the tables would have been made from a stabilised cast iron, the T-slots being, for strength, milled from the solid.
Seven spindle speeds spanning 800 to 8000 r.p.m. were available, these being driven by a 0.5 h.p., 1425 r.p.m. motor foot mounted to the rear of the main column.
One wonder if any of these machines survive? Doubtless that those that were in action during WW2 would have been worked to death and, afterwards, if worn out, almost certainly discarded. If any are still in use, a handbook is available..