| 摘要 |
1. A fish grading device comprising a framework of substantially rigid elongate members pivotally interconnected to form a plurality of loops, wherein each said loop is formed from a plurality of said substantially rigid elongate members and defines an aperture not exceeding predetermined dimensions. 2. A device according to claim 1, wherein each said substantially rigid elongate member can rotate about its longitudinal axis. 3. A device according to any one of the preceding claims, wherein each said substantially rigid elongate member is tubular. 4. A device according to anyone of the preceding claims, wherein the substantially rigid elongate members are interconnected by means of elongate flexible members. 5. A device according to claim 4, wherein the or each said elongate flexible member is a string or thread. 6. A device according to claim 4 or 5, wherein the or each said elongate flexible member forms a respective loop corresponding to each said loop of said interconnected substantially rigid elongate members. 7. A device according to claim 6, wherein at least one said substantially rigid elongate member is slidable longitudinally relative to the corresponding elongate flexible member. 8. A device according to any one of the preceding claims, wherein a plurality of said loops of elongate members are each formed from four said substantially rigid elongate members. 9. A device according to claim 8, wherein each of said loops of substantially rigid elongate members is substantially rectangular. |
