Thanks for your supplemental information and analysis, Larry. Where I was at the time I did not have access to my copy of the TCRP Report 155, 2nd ed., but as you note the concerns are the same. As it happened, the snip I posted from the list of ...

It's difficult to discern from the low-resolution photo Angel provided, but it appears the tongue switch & mate hardware he has in hand is not an AREMA design. The tongue switch (on the left in his photo) may or may not be configured to the 1^57' geometry ...

You may also consider contacting a manufacturer, such as (but not limited to): voestalpine Railway Systems Nortrak. See https://www.voestalpine.com/nortrak/en/products/Turnouts-Transit-Systems/ which specifically menti ons "Turnout designs include ...

The AREMA 2018 Portfolio of Trackwork Plans, under "Passenger and Transit Drawings" has this which may be helpful: Since your photo is of a single tongue and mate switch, I did not include the listing of plans for double tongue switches. ...

Dear community, does anyone of you by chance have the geometry for a No. 10M Tongue Switch left turnout or can tell me where can I find information on this type of turnouts? Thanks in advance! Ángel G. Pérez Cámara Constructoria, S.A. de C.V. Metepec ...