The thickness gauge is a measuring instrument with an indicator meter installed on the bow frame, and the indicator meter reads the linear displacement of the measuring surface of the probe relative to the measuring surface of the anvil of the bow frame. Equipped with fork lifting device (or pressing device). Mainly used to measure the thickness of sheet, plate and other parts.
——JJF 1225-2010 "Thickness Gauge Calibration Specifications"
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The thickness gauge is an extension of the indicator application. It can quickly measure the thickness of the workpiece with just one click. It is a convenient handheld measuring tool and is widely used to measure the thickness of paper, film and various metal sheets. . picture
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Universal
The universal thickness gauge can quickly measure the thickness of small parts, paper, fabrics and more. The bezel and cover are integrated to prevent water or oil from penetrating into the indicator.
There are various types of thickness gauges, which are divided into digital display type and pointer type according to the reading method. According to different resolutions, they are divided into standard type and high-precision type. In addition, ceramic probe and anvil models are also available.
Standard type: resolution 0.01mm
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High-precision type: resolution 0.0005mm
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In order to bring more convenience to thickness measurement, there are also special models, such as lens thickness gauge, pipe thickness gauge, groove depth thickness gauge, etc. Depending on the workpiece, you can choose the corresponding probe, anvil, and frame depth. Meet the measurements.
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Lens thickness measurement
The 547-313A and 7313A thickness gauges can be used to measure the thickness of concave and convex lenses and concave and convex surfaces.
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The standard accessory is equipped with a spherical probe. If you need to measure the thickness of a flat surface, you only need to replace the anvil and use it again.
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Pipe thickness measurement
The measuring surfaces of the probe and anvil of the 547-360A and 7360A thickness gauges are spherical, suitable for measuring pipe wall thickness and bent plate thickness.
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Groove depth measurement
The measuring heads and anvils of the 547-315A and 7315A thickness gauges have a 1mm thick blade shape, making them suitable for measuring the depth of narrow grooves on round objects.
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In addition, different probes and anvils can be selected according to the workpiece, such as flat probes, needle probes, roller probes, etc. for customization.
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The depth of the watch frame can also be customized to different depths of 150, 200 or 300mm to meet different needs.
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Next, take the pointer type thickness gauge 7301A as an example to share the measurement method of the thickness gauge.
Thickness gauge measurement method
Preparation before measurement:
Be sure to complete the reference point setting before measuring. Especially when using in places with large temperature fluctuations, please check the set reference points. Please remove dust, chips, etc. before measurement.
Standard measurements:
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1. Hold the frame as shown.
2. With the anvil and probe closed, turn the bezel so that the long pointer indicates zero.
3. Gently press down on the lifting rod to lift the measuring rod.
4. Insert the workpiece, then gently release the lifting rod to make the probe contact the workpiece, read the long and short pointer values, and complete the measurement.
Incremental measurement: When batch measurement is required or product dimensions are close
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Take the measurement of a 1.29mm workpiece as an example:
1. Hold the frame as shown.
2. Measure the reference gauge or standard gauge (1.2mm), and then turn the dial so that the pointer indicates zero.
3. Gently press down on the lifting rod to lift the measuring rod.
4. Insert the workpiece (1.29mm), then gently release the lifting rod to make the probe contact the workpiece (1.29mm), read the long and short pointer values, and complete the measurement.
