cross-staff in a sentence
n.
📚 Grade Level: Grade 9, Grade 10, Grade 11, Grade 12
Definition
Cross-staff: a navigational instrument used to measure angles between the horizon and celestial bodies, consisting of a straight staff with a movable crosspiece.
Sample Sentences
- The cross-staff was an essential tool for navigators in the Age of Exploration.
- Using a cross-staff, the sailor measured the angle between the horizon and a celestial body.
- In the workshop, he carefully crafted a new cross-staff to replace the broken one.
- To ensure accuracy, the navigator adjusted the cross-staff based on the ship's current latitude.
- As the sun set, the crew gathered to learn how to use the cross-staff for celestial navigation.