| 摘要 |
<p>A two-piece portable toilet having sight gauges (26 and 28) for the flush water reservoir (22) and holding tank (24). Each sight gauge takes the form of a translucent disc-shaped plastic insert having a highlight formed by a diametral groove which permits the liquid level to be clearly ascertained as it approaches a critical level. The gauges allow good visibility of the liquid level while avoiding if desired viewing of the contents. Moving parts are avoided. The inserts are sealed by induction welding in openings in the wall of the reservoir and holding tank respectively.</p> |
