TERMINOLOGY and basis of measurement for curved on plan/bent glass
| SYMBOLS | DEFINITION | COMMENT |
| a° | Angle | Measured in degrees |
| A | Arc/Girth | Measured in mm |
| Ca | Chord | |
| H | Depth/Rise | |
| L | Length/Height | |
| R1 | Radius/inside mesurement | |
| R2 | Radius/outside mesurement | |
| T | Thickness of glass |
ANGLE – The angular measurement of a segment of a curved
ARC – The outside length of the curved portion of the bend
(Generally described as either interior arc or exterior arc)
CHORD – A straight-line segment that joins two points of an arc
CONCAVE – The ‘hollow’ face of curved glass
CONVEX – The ‘bulge’ face of curved glass
DEPTH OF BEND – The measurement from the width to the furthest point of curve
GIRTH – The distance around the concave or convex surface measured perpendicular to the rise including any flats.
TEMPLATE – A device manufactured at a scale of 1:1 to determine the shape of the glass bend to be made. (This would be required if none of the above measurements are available.