GUIDE TO PURCHASE,
INSPECT AND MAINTAIN DIGITAL MEASURING INSTRUMENTS

  At present, three-button digital measuring instruments with a manual on/off power switch is very popular in the market. Three buttons are respectively for Metric/Inch system interchange at any position, manual on/off power and zero setting at any position. Digital Measuring Caliper of this type can turn on /off manually without its zero position being changed. LCD display screen is made of special quartz glass, not of ordinary organic glass , so the three-button digital measuring instrument produced by Guanglu is anti-scratching and can undergo scratching of an ordinary knife. The modular structure makes it easy to maintain.

Guanglu can produce Digital Measuring Instrument with many selective functions as well as special operative performance at different requests from clients.

Special functions of Circuit:

Data Holding: Press HOLD Button to hold its momentary measured value when its value is difficult to obtain.

Setting Tolerance Range: The deviation value of limitation at the upper end and the lower one of a measured item can be set. Also, correctness of measured value of a workpiece can be displayed in advance. If it’s not correct, the deviation value above the upper end or the one above the lower end can be shown.

Tracing Maximum Value: With this function, it’s easier to measure the inside diameter such as a hole.

Tracing Minimum Value: With this function, it’s easy to measure the outside diameter such as an axletree.

Display Predetermination:

Usually, the diameter of a hole is measured by inside arch jaws of a vernier caliper. And data-determination is taken from the sum by measuring results and the whole width of inside arch jaws. The negligence in adding its dimension might cause rejects. The diameter of a hole can be obtained directly through data-predetermination, namely, predetermining the combined width of inside arch jaws, which makes it more safe and convenient to operate.

Digital caliper designed mechanically:

Digital Caliper with carbide tipped measuring faces:

It helps its measuring faces against abrasion greatly..

Gear digital caliper: It’s made to measure thickness of a gear tooth in a fixed string. The measuring face is tipped with carbide.

Whorl digital caliper: It’s made to measure the medium diameter of a whorl.

Inside groove digital caliper: It’s made mainly to measure the diameter of a workpiece’s inside groove.

Inside groove digital caliper: It’s made mainly to measure the width of a hole’s inside groove and the position to which a groove directs. Also, digital depth gages with a hook can function as good as above.

Outside groove digital caliper: It’s made mainly to measure dimension of recess on a surface of an item or to measure thickness of a irregularly-shaped board .

Digital thickness caliper: It’s made mainly to measure thickness of a softer item such as rubber and sponge etc. It’s with a power-limit device sometimes.

Offset digital caliper: It makes it easier to measure the stepped sections with a main scale jaw sliding up and down,.

Center distance digital caliper: It’s used to measure the center distance of two holes.

There’s two types: one is with awl anvil which is used to measure the center distance of two even holes. The other one with cylinder anvil measures an item in a stepping way like this: First, to measure the shortest distance between the inside of two holes, you need to lock the right slider at the right end and fasten and move the left slider to connect with the right slider; secondly, to measure the longest distance between the inside of two holes, you need to lock the left slider at the left end and fasten and move the right slider. With this, the measured value is the sum of the value measured twice. The value of Digital Caliper of this type is half displayed, namely, the distance of axises between two holes can be read out directly. For more information, please refer to its operating instructions.

Universal groove digital caliper: It’s made mainly to measure the inside width of a universal groove and its relative position.

Plastic digital caliper: It’s made of carbon-fiber plastic or of other engineering plastic. Guanglu digital calipers are also made of aluminum alloy etc., which is used mainly on some occasion requiring careful handling to avoid scratching a measured item.

Digital compasses: It took the place of the outdated compasses in time of production for years.

Digital calipers of various types mentioned above bring great convenience in many situations. For full information, please contact the manufacturer.

To purchase or to place an order with a manufacturer, you need to provide a draft of relative parts of the measured workpiece and to point out the dimension which are to be measured as well as its relative dimensions so as to make a selection from the products available properly or to design and manufacture special digital measuring instruments for special purposes. For instance, when it comes to choose and purchase inside groove digital calipers, you need to indicator the diameter of a measured groove within a hole or of the one-side depth, of the width of a groove, of the distance between the groove and of the opening of a hole and its diameter at the opening of a hole so as to make your purchasing or the design by a manufacturer more easier and correct.