Application:
As standard measures with highest precision, they serve for adjusting and checking indicating measuring devices and length-measuring systems.
Furthermore, they are used for monitoring gauges and measuring devices. They can be used individually or as combination of several individual measurements that are wrung together.
Material/ production:
As manufacturer of steel gauge blocks we use specially melted high-quality gauge steel. Due to careful hardening and a particular aging procedure we obtain high wear resistance and dimensional stability. Special lapping procedures guarantee excellent surface quality and very good adhesion of the measuring faces.
| Comparison of materials | Linear coefficient of thermal expansion Kelvin -1 |
Density g/cm3 |
Hardness (Vickers) |
| Oxide-carbide "Superdur" |
7,5 x 10-6 | 4,3 | 2000 |
| Steel | 11,5 x 10-6 | 7,85 | 800 |
| Cemented carbide | 5,3 x 10-6 | 14,7 | 1600 |
| Ceramics | 9,7 x 10-6 | 1350 |
Admissible variations and tolerances (values in µm according to DIN EN ISO 3650)
| Nominal dimensional range in mm |
Tolerance class K |
Tolerance class 0 |
Tolerance class 1 |
Tolerance class 2 |
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| over | up to | Limit deviation of the length of the nominal dimension at an arbitrary spot | Tolerance for the deviation range |
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| ± te in µm | tv in µm | ± te | tv | ± te | tv | ± te | tv | ||
| - | 10 | 0,2 | 0,05 | 0,12 | 0,1 | 0,2 | 0,16 | 0,45 | 0,3 |
| 10 | 25 | 0,3 | 0,05 | 0,14 | 0,1 | 0,3 | 0,16 | 0,6 | 0,3 |
| 25 | 50 | 0,4 | 0,06 | 0,2 | 0,1 | 0,4 | 0,18 | 0,8 | 0,3 |
| 50 | 75 | 0,5 | 0,06 | 0,25 | 0,12 | 0,5 | 0,18 | 1 | 0,35 |
| 75 | 100 | 0,6 | 0,07 | 0,3 | 0,12 | 0,6 | 0,2 | 1,2 | 0,35 |
| 100 | 150 | 0,8 | 0,08 | 0,4 | 0,14 | 0,8 | 0,2 | 1,6 | 0,4 |
| 150 | 200 | 1 | 0,09 | 0,5 | 0,16 | 1 | 0,25 | 2 | 0,4 |
| 200 | 250 | 1,2 | 0,1 | 0,6 | 0,16 | 1,2 | 0,25 | 2,4 | 0,45 |
| 250 | 300 | 1,4 | 0,1 | 0,7 | 0,18 | 1,4 | 0,25 | 2,8 | 0,5 |
| 300 | 400 | 1,8 | 0,12 | 0,9 | 0,2 | 1,8 | 0,3 | 3,6 | 0,5 |
| 400 | 500 | 2,2 | 0,14 | 1,1 | 0,25 | 2,2 | 0,35 | 4,4 | 0,6 |
| 500 | 600 | 2,6 | 0,16 | 1,3 | 0,25 | 2,6 | 0,4 | 5 | 0,7 |
| 600 | 700 | 3 | 0,18 | 1,5 | 0,3 | 3 | 0,45 | 6 | 0,7 |
| 700 | 800 | 3,4 | 0,2 | 1,7 | 0,3 | 3,4 | 0,5 | 6,5 | 0,8 |
| 800 | 900 | 3,8 | 0,2 | 1,9 | 0,35 | 3,8 | 0,5 | 7,5 | 0,9 |
| 900 | 1000 | 4,2 | 0,25 | 2 | 0,4 | 4,2 | 0,6 | 8 | 1 |
| Cross sections for the nominal dimensional ranges | 0,3 - 10 mm | = 30 x 9 mm | |||||||
| über 10 mm | = 35 x 9 mm | ||||||||
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