 | United States. Bureau of Mines - 1927 - 158 halaman
...one 6 by 6 by % inch (15.24 by 15.24 cm. by 6.35 mm.), with a hole 1^4 inches (3.175 cm.) in diameter in its center, the sides of which shall be perpendicular...to fit tightly inside the shield, with an opening 4 inches (10.16 cm.) in diameter concentric with the ring support. These are arranged as follows : The... | |
 | David Talbot Day - 1922 - 1000 halaman
...shield. There are two hard asbestos boards: (1) 6 by 6 by i inch, with a hole 1 i inches ' in diameter in its center, the sides of which shall be perpendicular to the surface: (2) asbestos board to fit tightly inside the shield, with an opening 4 inches in diameter concentric... | |
 | David Talbot Day - 1922 - 984 halaman
...perpendicular to the surface: (2) asbestos board to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support. These are arranged as follows: The asbestos board (2) is placed on the ring and the smaller asbestos board (1) on top so that it may be... | |
 | David Talbot Day - 1922 - 990 halaman
...i inches 1 in diameter in its center, the sides of which shall be perpendicular to the surface: (2) asbestos board to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support. These are arranged as follows: The asbestos board... | |
 | Augustus Herman Gill - 1923 - 76 halaman
...shield. There are two hard asbestos boards, one 6 by 6 by J^ inch, with a hole 1^ inches in diameter in its center, the sides of which shall be perpendicular...to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support. These are arranged as follows: The second asbestos... | |
 | Eugene Hendricks Leslie - 1923 - 700 halaman
...shield. There are two hard asbestos boards, one 6 by 6 by l/\ inch, with a hole Ij4 inches in diameter in its center, the sides of which shall be perpendicular...to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support. These are arranged as follows : The second asbestos... | |
 | Eugene Hendricks Leslie - 1923 - 698 halaman
...i J4 inches in diameter in itcenter, the sides of which shall be perpendicular to the surface; t're other, an asbestos board to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support These are arranged as follows : The second asbestos... | |
 | George G. Oberfell, R. C. Alden - 1924 - 568 halaman
...inside the shield. There are two hard asbestos boards, one 6x6xJ4 in-, with a hole \1/^ in. in diameter in its center, the sides of which shall be perpendicular...fit tightly inside the shield, with an opening 4 in. in diameter concentric with the ring support. These are arranged as follows : The second asbestos board... | |
 | Wilfred Welday Scott - 1925 - 1018 halaman
...shield. There are two hard asbestos boards, one 6 by 6 by $ inch, with a hole 1? inches in diameter in its center, the sides of which shall be perpendicular...to fit tightly inside the shield, with an opening 4 inches in diameter concentric with the ring support. These are arranged as follows: The second asbestos... | |
 | United States. National Bureau of Standards - 1929 - 1868 halaman
...boards; one 6 by 6 by % inch (15.24 by 15.24 cm by 6.35 mm), with a hole \% inches (3.175 cm) in diameter in its center, the sides of which shall be perpendicular...to fit tightly inside the shield, with an opening 4 inches (10.16 cm) in diameter concentric with the ring support. These are arranged as follows: The... | |
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The second asbestos board is placed on the ring and the first or smaller asbestos board on top so that it may be moved in accordance with the directions for placing the distilling flask. Direct heat is applied to the flask only through the ij-in. 
