Granite Straight Ruler With 1μm

UNPARALLELED LTD is one of the leading manufacturers and suppliers of granite straight ruler with 1μm in China. With abundant experience, we warmly welcome you to buy advanced granite straight ruler with 1μm made in China here from our factory. We also accept custom orders.

Granite Straight Ruler also called Granite Straight Edge, is manufactured by nice Black Granite with excellent color and Ultra high accuracy, with the addiction of higher precision grades in order to satisfy all specific user needs, both in workshop or in metrological room.

Unpralleled can manufacture granite straight ruler with 1μm. Generally granite straight ruler will have two or four precision surfaces. We will manufacutre granite straight ruler according to your requirements.

All granite precision rulers are tested in a temperature (20°C) and humidity controlled environment.

Function: For straightness and flatness measurement.

All UNPARALLELED® granite measuring are supplied with Authoritative Test Report.

Calibration Certificate available on request*.

The chart shows standard sizes, weights, article codes and the absolute flatness tolerances (in micrometers).

UNPARALLELED® can supply granite rulers with different sizes according to customer needs and drawings, with holes, threaded inserts, guide or clamping T-slots, clearing grooves and with rubber feet (for the smaller sizes).

Granite is a type of igneous rock quarried for its extreme strength, density, durability, and resistance to corrosion. Ultra Precision Manufacturing Department at UNPARALLELED LTD confidently works with granite components engineered in shapes, angles, and curves of all variations on a regular basis—with excellent outcomes.
Through our state of the art processing, cut surfaces can be exceptionally flat. These qualities make granite the ideal material to create custom-size and custom-design machine bases and metrology components.
Our Superior Black Granite has low water absorption rates, minimizing the possibility of your precision gages rusting while setting on the plates.
When your application calls for a plate with custom shapes, threaded inserts, slots or other machining. This natural material offers superior stiffness, excellent vibration dampening, and improved machinability.
Due to its unique properties, black granite in recent years, has been used extensively in the field of measuring instruments, both for traditional ones (surface plates, parallels, set squares, etc…), as well as modern ones: CMM machines, physic-chemical process machine tools.
Due to its unique properties, black granite in recent years, has been used extensively in the field of measuring instruments, both for traditional ones (surface plates, parallels, set squares, etc…), as well as modern ones: CMM machines, physic-chemical process machine tools.
Suitably lapped black granite surfaces are not only extremely precise but also ideal for use in conjunction with air bearings.
The reason of the choice of black granite in manufacturing of precision units are the following:
DIMENSIONAL STABILITY: black granite is a natural aged material formed over millions of years and therefore displays great internal stability
THERMAL STABILITY: the linear expansion is much lower than the steel or cast iron ones
HARDNESS: comparable to good-quality tempered steel
WEAR RESISTANCE: instruments last longer
ACCURACY: the flatness of the surfaces is better than the one obtained with traditional materials
RESISTANCE TO ACIDS, NON-MAGNETIC ELECTRICAL INSULATION RESISTANCE TO OXIDATION: no corrosion, no maintenance
COST: working the granite with state-of-the-art technology prices are lower
OVERHAUL: Eventual servicing can be carried out quickly and cheaply
Custom: Custom sizes can be quoted upon request.

 

We will offer technical supports for assembly, adjustment, maintain.

• Offering the manufacturing &inspection videos, and customers can control and konw every detail at anytime anywhere.

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