 | Charles Leadbetter - 1742 - 530 σελίδες
...commonly made of Silver, Brafs, Ivory, or Box- wood, in Length 6, 8, 9, and 12 Inches, with »Joint like a Carpenter's Rule ; fo that the faid Legs, together...certain right Lines, drawn from the Center of the jokit, contain Angles of different Quantities. The Lines that are commonly drawn upon the Face of this... | |
 | Arthur Burns - 1771 - 396 σελίδες
...is conftructed of Silver, Brafs, Ivory, or Box Wood, in Length 6, 8, 9, or 12 Inches, with a Joint like a Carpenter's Rule, fo that the faid Legs, together...cer.tain right Lines drawn from the Center of the Join?, contain Angles of different Quantities : The Lines that are commonly drawn upon the Face of... | |
| |
Joint like a Carpenter's Rule ; fo that the faid Legs, together with certain right Lines, drawn from the Center of the jokit, contain Angles of different Quantities. 