Three quick site tools: even spacing with running marks read out loud, the diagonal to square up a base, and levels from a dumpy.
Balusters: max gap 99 mm so a 100 mm sphere can't pass. Works for pickets, posts, joists and battens too.
Running marks from the left
Take your quantities across to Price Planter and compare them across UK builders' merchants — including whether splitting the order across two merchants works out cheaper.
Compare material pricesQuantities are typical trade allowances and a guide only — always confirm with your tradesperson or supplier before ordering.