This creative department provides a water depth measuring instrument for shrimp fishing, including: a single pendant with a fixed hook at one end and a loop at the other end； a chain with a weight body fixed at one end and the loop at the other end The ring and sleeve are provided with a positioning sleeve, which can be slid to mark the water level on the chain. A magnetic part is embedded in the counterweight. The positioning sleeve can be identified by a variety of different colors to record the depth of the fishing shed in different shrimp fishing ponds. According to this, in implementation, it achieves the effects of quickly measuring the depth of the fishing shed, obtaining accurate signals, and easy to catch shrimp； and in use, it is easy to store, not easy to lose, and can be used for the next time.本創作係提供一種釣蝦水深測量器具，包括有：一單掛件，為一端具有固定彎勾，另一端具有圈環；一鏈條，於一端固設有配重體，另一端可穿設該圈環且套設有定位套，可滑移該鏈條上用於標記水位高度。該配重體內埋設有一磁性件。該定位套可具備多種不同顏色識別，以利分次記錄不同釣蝦池之釣棚深度。據此在實施上，達到快速量測釣棚深度、獲致準確訊號及易於釣取蝦子之功效；而在使用上，達到收納簡易、不易丟失，且能達到方便下次再使用之功效。
