Thwart

Saddle Comparator
Opacity
Opacity

Compare mode

Range ±mm 10
Range ±/mm 0.12

Dimensions

≈ Measured from 3D scans — approximate (±~3 mm). “Max width” is the scan’s widest point and may differ from a maker’s nominal spec. Best for relative comparison.

Views

Fine-align B

Nudge B if the auto-alignment is slightly off, or to compare a different region.

Move Y
Move X
Move Z
Yaw
Pitch

Sit-bone width guide

Two vertical planes spaced by your sit-bone width and centred on the saddle midline — roughly where your sit bones would land. Measure yours by sitting on corrugated card or foam and reading the centre-to-centre dimple distance.

Width mm

Mouse mode

Sets what left-drag does (scroll always zooms). Free: left rotates, right pans.

The Bike Mechanic Ltd The Bike Mechanic Ltd