| 摘要 |
A wheel base, tracking and frame analyzer that has a pair of gauges each having a set of telescoping channels is disclosed. The two channels of each gauge carry reverse scales which overlap when the channels are extended the tread width of a set of wheels under test. Contact fingers are carried by each channel so that a wheel and tire will be squarely engaged. An optical sight tube is adjustably located on each gauge so that a target reading may be taken on the reverse scales of the second gauge. Similarly, the second gauge adjustably supports a sight tube which reads the reverse scales on the first gauge. In a second embodiment, a semi-circle protractor is substituted for each sight tube, and an elastic cord is extended between the origin points of both protractors. The ratios of the two reverse scale target readings, when each sight tube or each protractor origin point is located on a unity ratio position on its supporting gauge, renders an indication of the wheel base, tracking, or frame distortion. In particular, the type of such distortions, for example a diamond frame, an offset frame, slipped rear axle, or a crushed front corner, may be determined by an analysis of the target ratio readings.
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