Sagitta Rule: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
Line 8: | Line 8: | ||
In Live Steam a [[Sagitta Rule]] is used to directly measure the radius of a curved section of track. | In Live Steam a [[Sagitta Rule]] is used to directly measure the radius of a curved section of track. | ||
* [http://ibls.org/files/2020/CharlesField_TrackPanelJig/150_Sagitta_Rule_for_10_Foot_Rail.pdf 130 Sagitta Rule for 10 Foot Rail (PDF)] |
Revision as of 15:45, 1 December 2020
- In geometry, the sagitta of a circular arc is the distance from the center of the arc to the center of its base. It is used extensively in architecture when calculating the arc necessary to span a certain height and distance.
In Live Steam a Sagitta Rule is used to directly measure the radius of a curved section of track.