RealityMinus3:
Weathervane
RealityMinus3:
Dreaming spire
RealityMinus3:
Dreaming spire
RealityMinus3:
Up
RealityMinus3:
Chalkboard
RealityMinus3:
Steampunk ship
RealityMinus3:
Steampunk clock
RealityMinus3:
The Earth orbits
RealityMinus3:
Zenith sector
RealityMinus3:
Tallying up
RealityMinus3:
Early adding machine
RealityMinus3:
Early adding machine
RealityMinus3:
Wooden tables
RealityMinus3:
Calculating by rods
RealityMinus3:
Napier's Rods
RealityMinus3:
Napier's Rods
RealityMinus3:
Calculation strips
RealityMinus3:
Calculation cylinder
RealityMinus3:
The Fowler Calculator
RealityMinus3:
The Fowler Calculator
RealityMinus3:
Precision and power
RealityMinus3:
Thacher's Cylindrical Slide Rule
RealityMinus3:
Thacher's Cylindrical Slide Rule
RealityMinus3:
Sundial
RealityMinus3:
Sundial
RealityMinus3:
Sundial
RealityMinus3:
Ingenious devices
RealityMinus3:
Polyhedral dials