Description
The Atlas 821 is a 6-piece pack of 9′′ (228 mm) Code 100 nickel-silver straight Snap-Track — the workhorse straight in Atlas's HO system and the most-used piece in any Snap-Track layout.
Geometry: 9′′ is Atlas's standard module — two straights cleanly butt against any curve, terminal, or turnout. Pair with 15′′R, 18′′R, or 22′′R curves to lay out ovals, dogbones, and figure-8s; pair with shorter pieces (#822 6′′, #823 3′′, #825 1.5′′) to fit any track plan.
- Scale: HO
- Code: 100 (0.100′′ rail height)
- Length: 9′′ / 228 mm — 6 pieces
- Rail: Nickel-silver, brown plastic ties
- System: Snap-Track with integral rail joiners
- Family: 9′′ (#821), 6′′ (#822), 3′′ (#823), 1.5′′ (#825)