That's a "Trakrite" guage? Anything between £16 and £32 (or £165 if you want Caster as well)?
For about £1.60, or nothing, you can have this:
Making a camber gauge.
Make it out of a piece of folded metal sheet, drilled as shown to take the wheel studs, or just long enough along the fold to bridge the rims across the diamter of the whell. If you wnat to check camber change from bump to droop, then the curved edge below the leaves clearance for the jack, used to move the wheel up and down. A central hole is also needed, to clear the hubcap(not shown in diagram).
The dimensions of the gauge are not critical, but should be large enough to take the wheel stud holes. Dimension ‘D’, the height of face ‘A’, should be 350-400 mms, to allow you to measure very small angles.
Mark a line down the middle of face ’A’, and a scale along the lower edge, either side of the midline. See the diagram. File a tiny ‘V’ in the edge at the top of the vertical line.
The scale needs to be calculated from dimension ‘D’, as follows:
Degrees 0.5 1 1.5 2 2.5 3 3.5 4
To find the distance of each scale mark from the midline multiply Dimension ‘D’ by: 0.009 0.018 0.026 0.035 0.044 0.053 0.061 0.07
(these numbers are the trigonometric function ‘Tangent’ of the angle in degrees)
If D=370mm; then distance of each mark from midline, in mms, will be:
3 6.5 10 13 16 19.5 22.5 26
I have rounded the distances to the nearest 0.5mm, as I can’t see smaller than this!
I recommend using millimetres – inch fractions in decimals are much more difficult.
How to use the camber gauge.
Just place the gauge across the wheel and read off the camber at rest.
This figure is the camber angle at rest. If you remove the spring and shocker, you can work the suspension from full droop to bump, reading the change in camber angle all the way.
Position the car on a level surface; Secure the car with chocks at the rear wheels.
Put someone in the driver’s seat, or a suitable weight.
Measure the height above the ground of the outer end of the lower wishbone.
Measure the height of the chassis rail at a suitable point.
Place a jack under the wishbone, and raise the wheel off the ground.
Place an axle stand under the chassis rail, with the car at the same height as before.
Remove the wheel.
Put the gauge onto the hub, over the wheel studs.
Adjust the hub so that face ‘A’ is vertical.
Using the jack, adjust the wishbone to the same height as before.
Hang a plumb bob over the edge of face ‘A’, from the ‘V’ at the top of the line.
Tape on the back of face ’A’ will hold the line in place.
Read the camber angle at the lower edge.
The ideal is for the camber to stay the same throughout the arc of movement, but this will not happen! Adjust the shock absorber spring seats, and the wishbone bracket shims to get the minimum change.
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