astronomicall distribution wee reserve to his time and place.) And that done, the use of it shall be shewed in the measuring of lines.
This instrument, at the discretion of the measurer may be greater or lesser. For the quantity of the same can no otherwayes be determined.
2. The shankes of the staffe are the Index and the Transome.
The principall parts of this instrument are two, the Index, or Staffe, which is the greater or longer part: and the Transversarium, or Transome, and is the lesser and shorter.
3. The Index is the double and one tenth part of the transome.
Or thus: The Index is to the transversary double and 1/10 part thereof. H. As here thou seest.
4. The Transome is that which rideth upon the Index, and is to be slid higher or lower at pleasure.
Or, The transversary is to be moved upon the Index, sometimes higher, sometimes lower: H. This proportion in defining and making of the shankes of the instrument is perpetually to be observed: as if the transome be 10. parts, the