task_geometry__measuring_tools__ruler_length_value

Contract

1. Domain: geometry
2. Scene id: measuring_tools
3. Supported query_ids: single
4. Answer schema: integer
5. Annotation schema: segment

Program Contract

• read_visible_measurement_tool(tool=ruler, candidate=marked_length_on_carrier_shape, unit=centimeters, operation=read_ruler_span, output_role=length_measure_integer, annotation_witness=measured_segment); scene=measuring_tools; scope=ruler_length_value

Reasoning Operations

Families: formula_evaluation

Prompt Bundle

• Prompt text is loaded from the scene prompt bundle configured for measuring_tools.
• Prompt modes: answer_only and answer_and_annotation.

Annotation

Prompt-facing annotation uses pixel-space witnesses only. Annotation must be a scalar segment [[x0,y0],[x1,y1]] marking the measured visual length.

Internal Sampling

The carrier shape is internal construction metadata, not public query variation. Supported carrier shapes are circle, triangle, parallelogram, and trapezoid.

Determinism

Generation is deterministic for a fixed seed, params, config, and prompt bundle version.

Source

• Config: src/trace_tasks/resources/configs/domains/geometry/measuring_tools.yaml
• Task module: src/trace_tasks/tasks/geometry/measuring_tools/ruler_length_value.py