For repeated centres, fixings or other marks read from one datum. Read cumulative distances instead of moving the tape and adding the same interval repeatedly.
- Start value
- The first mark’s distance from the chosen datum.
- Interval
- The positive fixed increment added between successive marks.
A fixed-step sequence of 100 marks. There is no total-length input and the last interval is not adjusted to fit an endpoint.
- Numbered cumulative marks, beginning with the start value itself.
The first five rows of the full 100-mark sequence.
| Quantity | Value |
|---|---|
| Start; interval | 200 mm; 50 mm |
| Marks 1–5 | 200; 250; 300; 350; 400 mm |
| Mark 100 | 5150 mm |
For row k starting at 1: mark = start + (k − 1) × interval. The hundredth row adds 99 intervals, not 100.
Use metric or imperial lengths consistently and keep extra precision until the final display. Rounded diagram labels are not a measuring tolerance.
The sequence is a setting-out aid, not a physical length constraint. Stop at the marks needed for the actual piece, and keep the same zero reference throughout.
Is the first mark zero?
Only if the start value is zero. Otherwise the first row is exactly your starting offset.
Can it distribute points between two ends?
Use Equal Spacing for a fixed total length. Layout Marks preserves the interval you enter.
- Is the first mark zero?
- Only if the start value is zero. Otherwise the first row is exactly your starting offset.
- Can it distribute points between two ends?
- Use Equal Spacing for a fixed total length. Layout Marks preserves the interval you enter.
Measurements, units and material terms
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