Dial Type Air Gage

"The MD series dial pneumatic micrometers are precision comparators utilizing the flow of high pressure air. Back pressure which is amplified in proportion to a small clearance is indicated on the dial gauge. Unique adjustment functions allow for accurate magnification adjustment over a wide range. High pressure air blows off dust, oil, etc. to ensure accurate measurement and quick response." 

The pneumatic micrometer offers all the advantages of non-contact measurement, high magnification, remote measurement, high efficiency, etc.
The high pressure air type allows for a wide clearance between the measuring probe and object, hence offers a wide measuring range and prolongs the probe life.
The precision regulator and amplifier relay assures accurate measurement,stable indication, and very quick response.
Magnification can be adjusted over a wide range, and any desired measuring range can be obtained simply by changing the scale board.
Several models of different magnifications, from low to high, are available.
Not only the simple type but also the duplex type is very compact and easy to use.
The dual indicator has two pointers (black and red), facilitating the correlation of dimensions of two parts to be seen easily.
As the probe nozzle, even a nonstandard one can be used.