The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Application No. | Application Title | Issue Date |
| 20070214675 | Micrometer screw gauge with non-rotating measuring screw A micrometer screw gauge comprises a divided measuring spindle. The gauge's front part representing the measuring screw is secured in a torque-proof manner in a guide element. The rear section configured as a threaded spindle has the same diameter. In so doing, it is co... | 09/20/2007 |
| 20050274034 | Measuring instrument A measuring instrument that includes a tube 21 having a female thread 211 and a spindle 3 having a lead screw 31 screwing with the female thread 211 and capable of being advanced and retracted in an axial direction along with rotation ... | 12/15/2005 |
| 20050172508 | Precision distance-measuring instrument A distance-measuring precision instrument has a threaded measuring spindle supported in a housing, a sensor device which detects the rotary motion of the measuring spindle and which has a stationary sensor element immobile relative to the housing and a movable sensor el... | 08/11/2005 |