| 摘要 |
<p>13 A tamper indicator includes a collar (10, 10') which can be positioned to be circumambient a connection nut (N) on a gas meter (M). The collar (10) includes two portions (12, 14) which are interlocked by snapcatches (42, 44) which are located inside a locked collar. The collar portions (12, 14) are formed of frangible material and can include lines of weakening (40). Once in place, the collar (10, 10') cannot be removed without breaking it, and once broken cannot be repaired so that an indication is provided that the encircled connection nut (N) may have been tampered with.</p> |
