OTR SERIES
| MODEL | LENGTH | UNITS | ZERO PT. | ATTACHMENT | BLADE | BLADE |
| OTR1850 | 203 | 50 ft | ft, in, 1/8 | Hook End | Hook | F1 |
| OTR1050 | 1408 | 50 ft | ft, 1/10, 1/100 | Hook End | Hook | F2 |
| OTR181050 | 807 | 50 ft | ft, in, 1/8 & ft, 1/10, 1/100 | Hook End | Double Hook | F1 & F14 |
| OTR18M50 | 500 | 50 ft/15m | ft, in, 1/8 & m, cm, 2mm | Hook End | Double Hook | F1 & F13 |
| OTR10M50 | 1101 | 50 ft/15m | ft, 1/10, 1/100 & m, cm, 2mm | Hook End | Double Hook | F2 & F13 |
| OTR18100 | 210 | 100 ft | ft, in, 1/8 | Hook End | Hook | F1 |
| OTR10100 | 1415 | 100 ft | ft, 1/10, 1/100 | Hook End | Hook | F2 |
| OTR1810100 | 814 | 100 ft | ft, in, 1/8 & ft, 1/10, 1/100 | Hook End | Double Hook | F1 & F14 |
| OTR18M100 | 517 | 100 ft/30m | ft, in, 1/8 & m, cm, 2mm | Hook End | Double Hook | F1 & F13 |
| OTR10M100 | 1118 | 100 ft/30m | ft, 1/10, 1/100 & m, cm, 2mm | Hook End | Double Hook | F2 & F13 |
| OTR18165 | 227 | 165 ft | ft, in, 1/8 | Hook End | Hook | F1 |
| OTR10165 | 1422 | 165 ft | ft, 1/10, 1/100 | Hook End | Hook | F2 |
| OTR18M165 | 524 | 165 ft/50m | ft, in, 1/8 & m, cm, 2mm | Hook End | Double Hook | F1 & F13 |
| OTR10M165 | 1125 | 165 ft/50m | ft, 1/10, 1/100 & m, cm, 2mm | Hook End | Double Hook | F2 & F13 |
| OTR18200 | 234 | 200 ft | ft, in, 1/8 | Hook End | Hook | F1 |
| OTR10200 | 1439 | 200 ft | ft, 1/10, 1/100 | Hook End | Hook | F2 |
| OTR1810200 | 838 | 200 ft | ft, in, 1/8 & ft, 1/10, 1/100 | Hook End | Double Hook | F1 & F14 |
| OTR18M200 | 531 | 200 ft/60m | ft, in, 1/8 & m, cm, 2mm | Hook End | Double Hook | F1 & F13 |
| OTR10M200 | 1132 | 200 ft/60m | ft, 1/10, 1/100 & m, cm, 2mm | Hook End | Double Hook | F2 & F13 |
| OTR18300 | 241 | 300 ft | ft, in, 1/8 | Hook End | Hook | F1 |
| OTR10300 | 1446 | 300 ft | ft, 1/10, 1/100 | Hook End | Hook | F2 |
| OTR1810300 | 845 | 300 ft | ft, in, 1/8 & ft, 1/10, 1/100 | Hook End | Double Hook | F1 & F14 |
| OTR18M300 | 548 | 300 ft/100m | ft, in, 1/8 & m, cm, 2mm | Hook End | Double Hook | F1 & F13 |
| OTR10M300 | 1149 | 300 ft/100m | ft, 1/10, 1/100 & m, cm, 2mm | Hook End | Double Hook | F2 & F13 |
| OTR15M | 1040 | 15m | m, cm, 2mm | Hook End | Hook | F3 |
| OTR15MM | 10448 | 15m | m, cm, 5mm & m, cm, 2mm | Hook End | Hook | F12 & F13 |
| OTR30M | 10417 | 30m | m, cm, 2mm | Hook End | Hook | F3 |
| OTR30MM | 10455 | 30m | m, cm, 5mm & m, cm, 2mm | Hook End | Hook | F12 & F13 |
| OTR50M | 10424 | 50m | m, cm, 2mm | Hook End | Hook | F3 |
| OTR50MM | 10462 | 50m | m, cm, 5mm & m, cm, 2mm | Hook End | Hook | F12 & F13 |
| OTR100M | 10431 | 100m | m, cm, 2mm | Hook End | Hook | F3 |
| OTR100MM | 20027 | 100m | m, cm, 5mm & m, cm, 2mm | Hook End | Hook | F12 & F13 |