Who is qualified to perform the measurement of the Shabbos techum?
Synopsis
Only an expert (mumcheh) who is knowledgeable in land measurement may perform the techum measurement. Non-experts may not be relied upon.
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What type and length of rope must be used when measuring the Shabbos limit (techum)?
4 opinions
How does the measurer handle a river that interrupts the measurement of the Shabbos techum?
3 opinions
At what height on the body must each person hold the measuring rope, and how tightly must it be stretched?
3 opinions
Must the techum always be measured directly opposite the city, even when terrain obstacles make measurement difficult?
2 opinions
How is a steep hill (one whose plumb line does not diverge 4 cubits at the base) treated during techum measurement?
3 opinions
How is a moderately steep hill (rising 10 handbreadths in 5 cubits) measured for the techum?
3 opinions across 3 eras
When a hill that rises 10 handbreadths in 4 cubits cannot be spanned in 50 cubits, may it be measured by estimation alone (omdan) or must the 4-cubit rope kidor method be used?
2 opinions
How is a valley measured for the techum — does the rule differ depending on whether the plumb line diverges 4 cubits?
2 opinions
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