The flexible AST magnetostrictive probe is available in lengths from 24" to 600". Reference the following for ordering information:
| Inches / Feet | Centimeters / Meters |
| 193" (16') to 216" (18') | 490cm (4.84m) to 548cm (5.45m) |
| 217" (18') to 240" (20') | 551cm (5.45m) to 609cm (6.06m) |
| 241" (20') to 264" (22') | 612cm (6.06m) to 670cm (6.66m) |
| 265" (22') to 288" (24') | 673cm (6.66m) to 731cm (7.27m |
| 289" (24') to 312" (26') | 734cm (7.27m) to 792cm (7.87m) |
| 313" (26') to 336" (28') | 795cm (7.87m) to 853cm (8.48m) |
| 337" (28') to 360" (30') | 855cm (8.48m) to 914cm (9.09m) |
| 361" (30') to 384" (32') | 916cm (9.09m) to 975cm (9.69m) |
| 385" (32') to 396" (33') | 977cm (9.69m) to 1,005cm (10m) |
| 397" (33') to 408" (34') | 1,008cm (10m) to 1,036cm (10.3m) |
| 409" (34') to 420" (35') | 1,038cm (10.3m) to 1,066cm (10.6m) |
| 421" (35') to 432" (36') | 1,069cm (10.6m) to 1,097cm (10.9m) |
| 433" (36') to 444" (37') | 1,099cm (10.9m) to 1,127cm (11.21m) |
| 445" (37') to 456" (38') | 1,130cm (11.21m) to 1,158cm (11.51m) |
| 457" (38') to 468" (39') | 1,160cm (11.51m) to 1,188cm (11.81m) |
| 469" (39') to 480" (40') | 1,191cm (11.81m) to 1,219cm (12.12m) |
| 481" (40') to 492" (41') | 1,221cm (12.12m) to 1,249cm (12.42m) |
| 493" (41') to 504" (42') | 1,252cm (12.42m) to 1,280cm (12.72m) |
| 505" (42') to 516" (43') | 1,282cm (12.82m) to 1,341cm (13.41m) |
| 517" (43') to 528" (44') | 1,312cm (13.12m) to 1,371cm (13.71m) |
| 529" (44') to 540" (45') | 1,342cm (13.42m) to 1,401cm (14.01m) |
| 541" (45') to 552" (46') | 1,372cm (13.72m) to 1,431cm (14.31m) |
| 553" (46') to 564" (47') | 1,402cm (14.02m) to 1,461cm (14.61m) |
| 565" (47') to 576" (48') | 1,432cm (14.32m) to 1,491cm (14.91m) |
| 577" (48') to 588" (49') | 1,462cm (14.62m) to 1,521cm (15.21m) |
| 589" (49') to 600" (50') | 1,492cm (14.92m) to 1,551cm (15.51m) |
| 601" (50') to 612" (51') | 1,522cm (15.22m) to 1,581cm (15.81m) |
| 613" (51') to 624" (52') | 1,552cm (15.52m) to 1,611cm (16.11m) |
| 625" (52') to 636" (53') | 1,582cm (15.82m) to 1,641cm (16.41m) |
| 637" (53') to 648" (54') | 1,612cm (16.12m) to 1,671cm (16.71m) |
| 649" (54') to 660" (55') | 1,642cm (16.42m) to 1,701cm (17.01m) |
| 661" (55') to 672" (56') | 1,672cm (16.72m) to 1,731cm (17.31m) |
| 673" (56') to 684" (57') | 1,702cm (17.02m) to 1,761cm (17.61m) |
| 685" (57') to 696" (58') | 1,732cm (17.32m) to 1,791cm (17.91m) |
| 697" (58') to 708" (59') | 1,762cm (17.62m) to 1,821cm (18.21m) |
| 709" (59') to 720" (60') | 1,792cm (17.92m) to 1,851cm (18.51m) |
| 721" (60') to 732" (61') | 1,822cm (18.82m) to 1,881cm (18.81m) |
| 733" (61') to 744" (62') | 1,852cm (18.52m) to 1,911cm (19.11m) |
| 745" (62') to 756" (63') | 1,882cm (18.82m) to 1,941cm (19.41m) |
| 757" (63') to 768" (64') | 1,912cm (19.12m) to 1,971cm (19.71m) |
| 769" (64') to 780" (65') | 1,942cm (19.42m) to 2,001cm (20.01m) |
| 781" (65') to 792" (66') | 1,972cm (19.72m) to 2,031cm (20.31m) |
| 793" (66') to 804" (67') | 2,002cm (20.02m) to 2,061cm (20.61m) |
| 805" (67’) to 816" (68') | 2,032cm (20.32m) to 2,091cm (20.91m) |
| 817" (68’) to 828" (69') | 2,062cm (20.62m) to 2,121cm (21.21m) |
| 829" (69’) to 840" (70') | 2,092cm (20.92m) to 2,151cm (21.51m) |
| 841" (70’) to 852" (71') | 2,122cm (21.22m) to 2,181cm (21.81m) |