| 摘要 |
PROBLEM TO BE SOLVED: To facilitate connection and disconnection of a trough to carry a measuring article to and from a device. SOLUTION: A connecting plate 25b and an engagement groove 25c of a sliding member 25 to constitute a connection and disconnection mechanism part 20 fix and hold a trough 5 on a device in a state of engaging it with an engagement piece 31 of a fixing member 30 on the device side. When an operation lever 28b is operated from outside of the device, the sliding member 25 moves and the connecting plate 25b and the engagement groove 25c hold a state of releasing engagement from the engagement piece 31. It is possible to remove the trough 5 from the device in this state and to easily carry out maintenance such as cleaning of the trough 5.
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