Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 237
ws ofPortugal-street; the blades being made with a convex instead of a straightedge, then- distance from each other being regulated by a milled-head screw,and then- separation for cleaning being more easUy accomplished. 214 PHEPAHATION OP OBJECTS. turned by a large railled-liead; at the upper end,… … Section Instrument, into the cavity of the cylinder, and serves to compress andsteady anything that it holds. A cylindrical stem of wood, apiece of horn, whalebone, cartilage, &c., is to be fitted to theinterior of the cylinder, so as to project a little above its top,and is to be steadied by…
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