Mesin saking abad pertengahan miwah pikolih seseleh, sekadi derék treadwheel, dados piranti sané mabuat rikala ngwangun, miwah tata cara ngwangun stéger sayan nglimbak saking masa sané riinan.
Medieval machines and inventions, such as the treadwheel crane, became indispensable during construction, and techniques of building wooden scaffolding were improved upon from Antiquity.