Incremental length gauges from HEIDENHAIN offer high accuracy over long measuring ranges.
These sturdily made gauges are available in application-oriented versions.
They have a wide range of applications in production metrology in multipoint inspection stations measuring equipment monitoring and as position measuring devices
B= Ball bearing guides
P= Pneumatic Actuation
W= Dust & Splashproof Heidenhain Incremental Length Gages play a role in incoming inspection production SPC quality assurance; anywhere fast reliable and accurate length measurement is needed. Their large measuring lengths are a particular advantage with ranges available up to 4" (100mm). Certo length gages are especially well suited to tasks such as gage-block inspection & calibration small-diameter Specto length gages are typically used in multi-point inspection and position measurement. The similarly compact Metro length gages are for higher accuracy applications. Heidenhain - Certo digital length gages offer an accuracy up to +/- .000001" (.00003mm) Heidenhain - Metro digital length gages have accuracy grades as fine as +/- .000008" (.0002mm) Heidenhain - Specto digital length gages feature accuracy of +/- .000040" (.001mm)

Name MT 1281
Measuring standard DIADUR phase grating on Zerodur® glass ceramic, grating period 4 µm
Measuring lengths 12 mm
Incremental signals 1 VPP
Signal period 2 µm
Power supply 5 V DC ± 5 %
Max. traversing speed 30 m/min
Vibration 55 to 2000 Hz ≤ 100 m/s² (EN 60 068-2-6)
Shock (11 ms) ≤ 1000 m/s² (EN 60 068-2-27)
Operating temperature 10 to 40 °C, ref. temperature 20 °C
Protection IEC 60529 IP 50
Weight 100 g
Reference marks Approx. 1.7 mm below upper stop
Recommended measuring step 0.1 µm / 0.05 µm
Application Exact measuring stations, Inspection equipment
Plunger actuation By cable or measured object
Position of plunger at rest Extended
System accuracy ± 0.2 µm
Permissible radial force ≤ 0.8 N
Operating attitude Any, version without spring: vertically downward
Fastening Clamping shank Ø 8h6

Heidenhain MT1281 Metro probe with with 1Vpp signal Range : 12mm/.5" Measuring Standard : DIADUR phase grating on Zerodur glass ceramic