What type and length of rope must be used when measuring the Shabbos limit (techum)?
Synopsis
The rope used to measure the Shabbos boundary must be linen, exactly 50 cubits long — not shorter (too elastic) and not longer (too heavy to stretch properly). This is derived from biblical verses citing linen and a measure of 50.
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How does the measurer handle a river that interrupts the measurement of the Shabbos techum?
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At what height on the body must each person hold the measuring rope, and how tightly must it be stretched?
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Must the techum always be measured directly opposite the city, even when terrain obstacles make measurement difficult?
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How is a steep hill (one whose plumb line does not diverge 4 cubits at the base) treated during techum measurement?
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How is a moderately steep hill (rising 10 handbreadths in 5 cubits) measured for the techum?
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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?
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How is a valley measured for the techum — does the rule differ depending on whether the plumb line diverges 4 cubits?
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What is the reason a valley deeper than 2,000 cubits requires measurement of the entire slope even when the plumb line diverges?
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When a trench of collected (still) water spans the Shabbos limits of two towns, may residents of each town draw water from within their own techum?
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May residents draw from a pit of straw (or similar dry goods, not water) that straddles two Shabbos limits?
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Do Shabbos techumin (limits) apply to someone traveling more than 10 tefachim above the ground?
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Discussion
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