| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid level gauge which can measure the liquid level of the coolant oil and slurry for a wire saw at a low cost, without changing an usual liquid level gauge extremely. SOLUTION: In a liquid level gauge 68, a float 72 and a support rod 70 for supporting the float 72 floatably are formed hollowly. Thereby, the float 72 and support rod 70 are lightened and the coolant oil with a small specific weight is floated up. A float cover 80 for guiding the floating of the float 72 is provided around the float 72. |
