Hello I thought that there was a way I could stop the out of range error, but I cannot now find it. It would be an a useful command to have as instead of negative readings we got readings between 270 and 359, which although strange is valid. In survex readings over 90 are just a warning, which seems far more sensible, the problem is that I don't think that I can enter the data in survex either without conversion as I don't think that degrees minutes and seconds can be entered. So I'm stuck with data that I have to convert, for different reasons depending on whether I use survex of therion. Here is part of the file, I have quiet a few survey centreline data normal from to clino compass tape ignoreall 1 2 1:08:25 83:37:40 17.88 2 3 00:00:00 -:-:- 0.055 3 - 02:39:00 266:49:00 3.206 3 - 314:28:20 299:57:45 2.02 3 - 16:32:25 312:13:20 1.246 3 - 06:22:35 84:16:10 1.17 3 - 309:16:45 84:15:50 1.846 3 - 55:00:10 122:44:50 0.77 3 - 325:02:55 249:55:45 1.014 3 5 359:30:50 338:07:25 16.674 5 - 306:52:00 262:23:20 1.402 5 - 59:29:30 343:51:30 1.076 5 - 305:08:25 358:34:30 1.274 5 - 315:26:20 90:51:35 1.632 5 - 29:12:45 77:01:35 1.891 5 - 19:55:50 33:02:00 3.071 5 - 348:22:35 31:08:25 3.707 5 - 350:35:20 15:31:25 4.292 5 - 13:29:35 15:31:20 4.202 5 - 12:24:50 30:20:20 7.919 5 6 17:29:05 31:28:50 6.444 6 - 307:24:35 149:47:35 1.738 6 - 344:44:40 149:45:30 1.426 6 - 77:05:35 149:36:05 1.523 6 - 306:05:00 314:12:10 0.84 6 - 353:47:50 94:54:35 2.091 6 - 00:42:00 219:31:40 5.446 6 - 18:33:50 230:03:05 4.468 6 7 12:26:05 241:13:00 4.272 .....etc Anyone got a solution that does not mean I have to convert in a spreadsheet? thanks Andrew