# FAQ: How To Use A Welding Fillet Gauge?

• Slide the gage and have the top end rest against the vertical piece. This end should be exactly at the top edge of the weld to be a 1/2″ fillet. If there is space between the gage and the toe of the weld then the weld is undersized. The bottom edge of the fillet has more room. This is to allow for a larger leg size.

The adjustable fillet weld gauge uses an offset arm that slides at a 45-deg angle to make fillet weld length measurements. You simply adjust the arm until it touches the toe of the vertical leg. The gauge is calibrated to 1/32 in. Four screws hold the offset arm in position for future adjustments.

## How do you measure a fillet weld?

Fillet weld sizes are measured by the length of the legs of the largest right triangle that may be inscribed within the fillet weld cross section.

## What does a fillet gauge measure?

Reading a Welding Fillet gauge is simple and straight forward. Each end of the gauge either measures leg length or throat thickness. Calculating leg length will always be the convex sides of the welding fillet gauge.

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## What is the weakest plane in fillet weld?

For a given amount of weld material, the fillet weld is not as strong as due to the heavy concentration of the stress. ∴ For fillet weld, the weakest plane is along the throat section.

## What is the minimum size of a fillet weld?

Explanation: The minimum size of fillet weld should not be less than 3mm and not more than thickness of thinner part joined.

## How do you calculate the area of a weld?

the area of the excess weld metal is given by the formula (w x h)/2. the area ‘A’ is (t-r) x (2r +g). the area ‘B’ is g x r.

## What is the maximum size of fillet weld?

The maximum size of fillet weld is obtained by subtracting 1.5mm from the thickness of the thinner member to be jointed. When welds are applied to round toe of steel sections, the maximum size of the weld should not be more than 1/3 of the thickness of the section at toe.

## What is checked with weld fillet gauge?

Welding gauges are inspection gauges used for checking alignment, checking dimensions before welding, verifying weld dimensions, and checking porosity of welds. Some gauges are multipurpose or single purpose.

## What is a fillet weld symbol?

The fillet weld symbol is a right triangle placed on the reference line with the perpendicular leg always on the left. The dimension specifying the leg size of a fillet weld is placed to the left of the fillet weld symbol, and on the same side of the reference line.

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## How can you tell how thick your throat is welding?

The throat is the shortest distance from the root to the face of the weld. To measure this dimension in a regular mitre or flat faced fillet weld is relatively simple. The shape is that of an isosceles triangle, the throat being 0.7 of the leg length.

## What is a taper gauge used for?

A taper gauge is a measuring tool that measures sizes such as the width of gaps and grooves, hole diameter, and pipe inner diameter.