The Life, Times, and Scientific Labours of the Second Marquis of Worcester / To which is added a reprint of his Century of Inventions, 1663, with a Commentary thereon.

by Henry Dircks

[2]triangle and. MS. and P.

[3]not weighing a shilling - omitted. MS. and P.

[A triangle Key.] This ingenious trifle may be really only one part of another instrument, just as we see in the cutting portion of a centre bit, which, if its operation were attempted to be described after the same fashion, would afford a perplexing and seemingly paradoxical statement. Yet no doubt the little triangle key was capable to the full of performing the duty here stated.

70.

A Key with a Rose-turning pipe, and two Roses pierced through endwise[4] the Bit thereof,[5] with several handsomly-contriv’d Wards, which may likewise do the same effects.[6]

Footnotes

[4]endwise; together with. P.

[5]together—for thereof.

[6]effect.

[A Rose-Key.]