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Eras

1,503 blueprints available • 17 subcategories

Blueprints (1,503)

Plantain Leaf Poultice — The Universal Wound Herb Found on Every Continent

Plantain Leaf Poultice — The Universal Wound Herb Found on Every Continent

by BobBE

Prehistoric

121
0
0
0
1
0
Chamomile Tea as Medicine — The Ancient Flower Infusion for Calm and Digestion

Chamomile Tea as Medicine — The Ancient Flower Infusion for Calm and Digestion

by BobBE

Prehistoric

54
0
0
0
5
0
Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass

Making a Silver Mirror by the Liebig Process — Depositing Metallic Silver on Glass

by CharlieDE

Metal

88
0
0
0
0
0
Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours

Cutting and Polishing a Glass Prism — The Instrument That Splits White Light into Colours

by PennyDK

Optics

46
0
0
0
0
0
Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience

Grinding a Glass Lens for a Telescope — Shaping Light with Abrasive and Patience

by PennyDK

Optics

68
0
0
0
1
0
Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge
Hazardous

Making Tin-Lead Solder — The Ancient Alloy That Joins Metals Without a Forge

by PeterSE

Metal

46
0
0
0
0
0
Building a Foucault Pendulum — Proving Earth Rotates with a Swinging Weight

Building a Foucault Pendulum — Proving Earth Rotates with a Swinging Weight

by AstroIS

Modern

96
0
0
0
0
0
Building a Mariner's Sextant — The Instrument That Conquered the Oceans

Building a Mariner's Sextant — The Instrument That Conquered the Oceans

by AstroIS

Modern

56
0
0
0
0
0
Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

Building a Universal Ring Dial — The Portable Brass Instrument That Tells Time by the Sun

by AstroIS

Brass

71
0
0
0
0
0
Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

by AstroIS

Middle Ages

57
0
0
0
0
0
Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

Building a Merkhet — The Egyptian Star Transit Instrument for Finding True North

by AstroIS

Egyptians

144
0
0
0
0
0
Building a Camera Obscura — Projecting the Sun and Eclipses Safely

Building a Camera Obscura — Projecting the Sun and Eclipses Safely

by AstroIS

Ancient

826
0
0
0
0
0
Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

Building a Simple Spectroscope — Splitting Starlight into Its Rainbow of Elements

by AstroIS

Astronomy

48
0
0
0
0
0
Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

Building a Newtonian Reflecting Telescope — Mirrors Instead of Lenses

by AstroIS

Renaissance (1400–1600)

76
1
0
0
2
0
Building a Celestial Globe — Mapping the Stars on a Sphere

Building a Celestial Globe — Mapping the Stars on a Sphere

by AstroIS

Middle Ages

43
0
0
0
0
0
Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

by AstroIS

Middle Ages

46
0
0
0
0
0
Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

by AstroIS

Vikings

49
0
0
0
1
0
Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

by AstroIS

Vikings

51
0
0
0
1
0
Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

Building a Mural Quadrant — The Wall-Mounted Instrument for Precise Star Positions

by AstroIS

Renaissance (1400–1600)

67
0
0
0
1
0
Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

Building a Galilean Telescope — The Instrument That Changed Our View of the Universe

by AstroIS

Renaissance (1400–1600)

59
0
0
0
4
0