Page 343 - Mahr马尔量具完整

MaraMeter | Advantages of the Snap Gage 840 F compared to a Micrometer

• Reduced Measuring Uncertainity
The MaraMeter Indicating Snap Gages have a notably reduced measuring uncertainty in comparison to a Micrometer.

Micrometer

Indicating Snap Gage
840 F
Uncertainty U in %

Workpiece tolerance in µm

Measuring Uncertainty U is dependent upon the tolerance of the workpiece

• Better utilization of the tolerance zone
Example: Workpiece tolerance 25 µm
The measured value in the uncertainty range can lie outside of the tolerance range, therefore the utilized tolerance of
the Micrometer is reduced to only 32% (8 µm). With a MaraMeter Indicating Snap Gage 840 F, 83% (20.8 µm) of the
workpiece tolerance can be utilized.

Workpiece tolerance = 25 µm

Uncertainty range Range of certainty Uncertainty range

Uncertainty Range of certainty Uncertainty
range range
Advantage:
With the Indicating Snap Gage the tolerance zone can be used to a far greater extent, thus
reducing the production costs.

MaraMeter | Indicating Measuring Instruments 339