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Calibration Rods with Calibration Certificate
The included certificate of calibration traceable to NIST states that these rods have passed a test for accuracy. They let you check and set micrometers and other measuring tools. All have insulated plastic handles to minimize heat expansion.
For technical drawings and 3-D models, click on a part number.
| Lg. | Lg. Tolerance | Dia. | Manufacturer | Manufacturer Model Number | Each | |
| 1" | 0" to 0.0001" | 1/4" | Starrett | 234A-1 | 0000000 | 000000 |
| 2" | 0" to 0.0001" | 1/4" | Starrett | 234A-2 | 0000000 | 000000 |
| 3" | 0" to 0.0001" | 1/4" | Starrett | 234A-3 | 0000000 | 000000 |
| 4" | 0" to 0.0001" | 1/4" | Starrett | 234A-4 | 0000000 | 000000 |
| 5" | 0" to 0.0001" | 1/4" | Starrett | 234A-5 | 0000000 | 000000 |
| 6" | 0" to 0.0001" | 1/4" | Starrett | 234A-6 | 0000000 | 000000 |
| 7" | 0" to 0.0001" | 3/8" | Starrett | 234A-7 | 0000000 | 000000 |
| 8" | 0" to 0.0002" | 3/8" | Starrett | 234A-8 | 0000000 | 000000 |
| 9" | 0" to 0.0002" | 3/8" | Starrett | 234A-9 | 0000000 | 000000 |
| 10" | 0" to 0.0002" | 3/8" | Starrett | 234A-10 | 0000000 | 000000 |
| 11" | 0" to 0.0002" | 3/8" | Starrett | 234A-11 | 0000000 | 000000 |
| 12" | 0" to 0.0002" | 7/16" | Starrett | 234A-12 | 0000000 | 000000 |
| 13" | 0" to 0.0002" | 7/16" | Starrett | 234A-13 | 0000000 | 000000 |
| 14" | 0" to 0.0002" | 7/16" | Starrett | 234A-14 | 0000000 | 000000 |
Calibration Rods
Also known as calibration standards, these rods let you check and set micrometers and other measuring tools. For accuracy, they’re precision ground to extremely tight length tolerances. They have insulated plastic handles to minimize heat expansion.
Sets come with rods of different lengths, making them convenient for checking a range of measuring tools.
For technical drawings and 3-D models, click on a part number.
Individual Rods
| Lg. | Lg. Tolerance | Dia. | Manufacturer | Manufacturer Model Number | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
| 1" | 0" to 0.0001" | 1/4" | Starrett | 234A-1 | 0000000 | 000000 |
| 2" | 0" to 0.0001" | 1/4" | Starrett | 234A-2 | 0000000 | 00000 |
| 3" | 0" to 0.0001" | 1/4" | Starrett | 234A-3 | 0000000 | 00000 |
| 4" | 0" to 0.0001" | 1/4" | Starrett | 234A-4 | 0000000 | 00000 |
| 5" | 0" to 0.0001" | 1/4" | Starrett | 234A-5 | 0000000 | 00000 |
| 6" | 0" to 0.0001" | 1/4" | Starrett | 234A-6 | 0000000 | 00000 |
Metric | ||||||
| 25mm | 0mm to 0.0013mm | 6.3mm | Starrett | 234MA-25 | 000000000 | 00000 |
| 50mm | 0mm to 0.0025mm | 6.3mm | Starrett | 234MA-50 | 000000000 | 00000 |
| 75mm | 0mm to 0.0025mm | 6.3mm | Starrett | 234MA-75 | 000000000 | 00000 |
| 100mm | 0mm to 0.0025mm | 6.3mm | Starrett | 234MA-100 | 000000000 | 00000 |
| 125mm | 0mm to 0.0025mm | 6.3mm | Starrett | 234MA-125 | 000000000 | 00000 |
| 150mm | 0mm to 0.0025mm | 6.3mm | Starrett | 234MA-150 | 000000000 | 00000 |
| 175mm | 0mm to 0.0032mm | 9.5mm | Starrett | 234MA-175 | 000000000 | 00000 |
| 200mm | 0mm to 0.0032mm | 9.5mm | Starrett | 234MA-200 | 000000000 | 00000 |
Rod Sets
| No. of Pieces | Includes | Manufacturer | Manufacturer Model Number | Each | |
Inch | |||||
|---|---|---|---|---|---|
| 5 | 1" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 2" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 3" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 4" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 5" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. | Starrett | S234E | 000000000 | 0000000 |
| 11 | 1" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 2" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 3" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 4" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 5" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 6" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 1/4" Dia. 7" Lg. (0" to 0.0001" Tolerance) Calibration Rod with 3/8" Dia. 8" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 3/8" Dia. 9" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 3/8" Dia. 10" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 3/8" Dia. 11" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 3/8" Dia. | Starrett | S234G | 000000000 | 000000 |
| 12 | 12" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 7/16" Dia. 13" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 7/16" Dia. 14" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 7/16" Dia. 15" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 7/16" Dia. 16" Lg. (0" to 0.0002" Tolerance) Calibration Rod with 7/16" Dia. 17" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 18" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 19" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 20" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 21" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 22" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. 23" Lg. (0" to 0.0003" Tolerance) Calibration Rod with 7/16" Dia. | Starrett | S234J | 000000000 | 00000000 |