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First Gear Scales Explained: 1:64, 1:50, 1:87 or 1:34?
Choose 1:64 for a DCP truck collection, 1:50 for many First Gear construction models, 1:87 for an HO-scale scene, or 1:34 for the larger refuse-truck subjects and accessories. Then check the actual dimensions. A scale describes the reduction from the real vehicle, not a fixed size shared by everything carrying that label.
Compare First Gear models by scale
1:64: a truck combination still needs a long shelf
The Cascadia raised-roof sleeper with Utility trailer, 60-1999, measures approximately 15 inches long by 2 inches wide by 2.5 inches high. Its 1:64 label should not make you expect the footprint of a small passenger car.
This scale is a useful starting point for a consistent DCP road-freight collection. Tractor-only models need less length, while a long sleeper and trailer combination can occupy most of a shelf compartment.
1:50: larger proportions, but subject still controls size
The 1:50 Volvo VNL 860 and trailer, 50-3515, is approximately 17.5 by 2.5 by 3 inches. It belongs to a different proportional group from the 1:64 Cascadia even though both represent road tractors pulling long trailers.
For the same real object at exact scale, 1:50 is 28 percent larger in each linear dimension than 1:64. That ratio is not an exact prediction for these two different trucks; it explains why mixing their scales changes the appearance of a scene.
Many Komatsu machines in the collection are 1:50. Matching the scale is a sensible first filter for a construction display, but it does not prove that an excavator fits on a particular lowboy or that a loader can reach a dump body.
1:87: useful for an HO street or industrial scene
The Volvo L180H refuse loader, 80-0337, is approximately 4 inches long. It is a smaller-scale subject for an HO layout or compact refuse-facility display, not a direct replacement for a 1:50 loader.
Use the model's complete outline when checking a building opening or parking area. Its articulated steering and bucket position can change the space occupied beyond a simple straight-ahead footprint.
1:34: a different refuse-truck and accessory group
The Peterbilt 567 roll-off truck, FG10-4395D, is approximately 12.5 by 3.5 by 4.25 inches. It is a substantial single truck rather than a miniature equivalent of an HO refuse model.
Matching 1:34 accessories can look proportionate, but the loading system must also match. A front-loader dumpster is not a roll-off container just because both items share the same scale.
Measure the display you intend to use
Use a paper outline for the model's listed length and width. Leave extra room for mirrors, an angled tractor, raised equipment and your hands when removing the model. Measure a case's usable interior, not its exterior or the product's shipping box.
Choose one scale for a proportion-matched scene. Mixed scales can work on separate shelves or clearly labeled collection displays; they simply need to be intentional. Check the current listing and complete configuration before selecting a close-fitting case or accessory.
