Reference of Measurements in Halacha: Difference between revisions
From Halachipedia
Reference of Measurements in Halacha (view source)
Revision as of 03:27, 30 August 2022
, 30 August 2022→Amah, Tefach, Etzbah
| Line 140: | Line 140: | ||
!Etzbah | !Etzbah | ||
|- | |- | ||
|Rav Moshe Feinstein<ref>Sh”t Igrot Moshe O”C 1:136. writes that the [[Amah]] is 21.25 inches and one can be strict to hold that it is 23 inches. Similarly, the Aruch Hashulchan YD 286:21 writes that 4 amot is one Russian ''sazhen'' which is the equivalent of 7 feet (see [https://en.wikipedia.org/wiki/Obsolete_Russian_units_of_measurement Wikipedia's page on Russian measurements]) meaning that the amah is 21 inches. [https://asif.co.il/download/kitvey-et/kol/kol-30/1-29.pdf Dr. Gideon Freedman in Kol Bramah v. 4 p. 229] proves that the Aruch Hashulchan YD 201:3 and Mishna Brurah 358:7 both hold that the amah is 21 inches. The Aruch Hashulchan says that an amah is three quarters of | |Rav Moshe Feinstein<ref>Sh”t Igrot Moshe O”C 1:136. writes that the [[Amah]] is 21.25 inches and one can be strict to hold that it is 23 inches. Similarly, the Aruch Hashulchan YD 286:21 writes that 4 amot is one Russian ''sazhen'' which is the equivalent of 7 feet (see [https://en.wikipedia.org/wiki/Obsolete_Russian_units_of_measurement Wikipedia's page on Russian measurements]) meaning that the amah is 21 inches. [https://asif.co.il/download/kitvey-et/kol/kol-30/1-29.pdf Dr. Gideon Freedman in Kol Bramah v. 4 p. 229] proves that the Aruch Hashulchan YD 201:3 and Mishna Brurah 358:7 both hold that the amah is 21 inches. The Aruch Hashulchan says that an amah is three quarters of an arshin and an arshin is 71.12 cm. The Mishna Brurah ties 53 Russian arshins to 70.83 amot. See there for the calculations.</ref> | ||
|21.25 in. (53.98 cm) | |21.25 in. (53.98 cm) | ||
|3.54 in. (9.00 cm) | |3.54 in. (9.00 cm) | ||
|0.89 in. (2.25 cm) | |0.89 in. (2.25 cm) | ||
|- | |- | ||
|Rav Chaim Noeh<ref>Shiurei Torah ( | |Rav Chaim Noeh<ref>Shiurei Torah (Siman 3 Seif 25 pg 249), Shiurei Torah (p. 71 n. 21) </ref> | ||
|18.90 in. (48 cm) | |18.90 in. (48 cm) | ||
|3.15 in. (8 cm) | |3.15 in. (8 cm) | ||
|0.79 in. (2 cm) | |0.79 in. (2 cm) | ||
|- | |- | ||
|Chazon Ish<ref>Shiurin | |Chazon Ish<ref>Shiurin Shel Torah (5750 p. 63) by the Steipler quotes the Chazon Ish as holding that the measure of the tefach is 9.62cm and when measuring with larger measures would be a stringency one should use 9.8cm. For some of the measurements there the tefach is rounded up to 10cm. Also, on p. 3 the measurements are converted to inches and it approximates the tefach as 4 inches. However, he references p. 63 for the more accurate measurements. Also, he notes that these are approximate measures, which he did because of the need to publicize the measures but not an accurate calculation.</ref> | ||
| | |22.72 in. (57.72 cm) | ||
| | |3.79 in. (9.62 cm) | ||
| | |0.95 in. (2.41 cm) | ||
|} | |||
When measuring an amount that would be a stringency to use a larger measure, the poskim have slightly larger measures. They are 1/48 larger than the above measures.<ref>Rava in Eruvin 3b states that when measuring with a larger measure would be a stringency one should use a larger tefach, in which the etzba'ot are spaced out. However, if using a larger measure would yield a leniency the smaller measure of a tefach, with the etzba'ot measured without any space, should be used. Rashba (cited by Chidushei Hameiri Eruvin 3a, Maggid Mishna, and Beit Yosef YD 201) explains that the larger measure is 1/48 larger than the smaller measure. Rav Chaim Noeh in Shiurei Torah p. 249 and Shiurei Tzion p. 71 spells this out how the halacha follows the Rashba and does the calculation for his measurements. Steipler (Shiurin Shel Torah p. 63) does the same for his measurements also using the Rashba's conversion factor.</ref> | |||
{| class="wikitable sortable" | |||
!Larger Measures | |||
!Amah | |||
!Tefach | |||
!Etzbah | |||
|- | |||
|Rav Moshe Feinstein<ref>Sh”t Igrot Moshe O”C 1:136</ref> | |||
|21.69 in. (55.10 cm) | |||
|3.62 in. (9.18 cm) | |||
|0.90 in. (2.30 cm) | |||
|- | |||
|Rav Chaim Noeh<ref>Shiurei Torah (Siman 3 Seif 25 pg 249), Shiurei Tzion (p. 71 n. 21) </ref> | |||
|19.29 in. (49 cm) | |||
|3.22 in. (8.17 cm) | |||
|0.80 in. (2.04 cm) | |||
|- | |||
|Chazon Ish<ref>Shiurin Shel Torah (p. 63). </ref> | |||
|23.20 in. (58.92 cm) | |||
|3.87 in. (9.82 cm) | |||
|0.97 in. (2.46 cm) | |||
|} | |} | ||
