Hi Nick,
 FWIW you can use the loose single rings (maybe one step above the tywraps 8-)

https://www.amazon.com/Antner-100Pcs-Diameter-Nickel-Plated/dp/B01KLC259A/ref=sr_1_1_sspa?crid=312ZLJZ7JKBB7&keywords=single+binder+rings&qid=1657562107&sprefix=single+binder+rings%2Caps%2C92&sr=8-1-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUExMUlVT0E4TTZKQVRZJmVuY3J5cHRlZElkPUEwNTYwMTc4SFo2N0xHSkpSTVFaJmVuY3J5cHRlZEFkSWQ9QTAwNDY4NjEySkZUTTQxRExTWTRZJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ==

cheers,
    Michael
sts-95.jpg

On Mon, Jul 11, 2022 at 1:37 PM Nick England <navy.radio@gmail.com> wrote:
I have a number of manuals that are loose-leaf with no hard covers.
They are punched with the standard Teletype 4-hole pattern.

I'd like to put them in report covers of some sort.
Does anyone have a source for 4-hole binders or report covers?
Or 2-hole (7" spacing) that fit the Teletype pattern.

Otherwise I have to bind them with zip-ties or re-punch them with a standard 3-hole pattern (8.5" spacing)

Thanks
Nick England K4NYW
www.navy-radio.com
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