Civilization manualBook 1: From Bare Hands to Steam and Electricity765 entries · 23 phases · 100 years
The Island
Phase 19 — Roads, bridges, flyovers and tall buildings  /  About year 55
19.01

Theodolite and builder's level

angles and heights measured to a hair: a straight road, a level floor, a true tower

KnowledgeYear 55Stands on 189 earlier

AWhat it needs

Needs 189 other products in all, 4 of them directly.

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