Rabbi Moshe David Tendler ZT”L

Please note:

  • This page and all derivatives is/are a continued work in progress. Please send a message for any corrections and those will be considered and/or actioned as soon as possible.
  • Just because the below authorities wearing Techeiles are listed doesn’t mean we have contact info on all of them. This is for informational purposes only.

R’ Moshe David Tendler is the son-in-law of R’ Moshe Feinstein ZT”L, professor of biology/rosh yeshiva at YU, and medical expert. He is someone who goes “against the grain” in medical opinion (such as using a tube for Metzitzah b’Peh), and is one Rabbi who has visited the Temple Mount multiple times in the past. He has written pieces on Tekhelet himself, such as this one on Masorah.

R’ Tendler wears it Rambam ratio with Radzyn-Chabad tying style. R’ Schachter apparently called him out on this once as to why not wear two strings. He responded but I don’t know what the response was.

Tying Method

MethodString RatioURL


MinhagMinhag SubGroupFully or Partially?


Tekhelet and MasorahLink

Additional Images


    Let's meet

    Let’s schedule a time to meet for strings and quality service.