Depth to Septem on YOUR 14X17" film holders

[Tin Can]

I am back to working on my 14X17 studio camera

This webpage is often quoted and described as wrong too!

http://home.earthlink.net/~eahoo/page8/filmhold.html

ULF film holders vary

What is this one dimension on yours?

[Michael Jones]

14x17 holders should not vary. There is an ANSi standard for them and that is a familiar size in the medical community.Of course, "should" is the operative word...

Don't forget this discussion:

https://www.largeformatphotography.info/forum/showthread.php?143185-ANSI-Standard-for-14x17-holder-seems-odd/page3

Good luck!

Mike

[Tin Can]

Thank you Michael!

I am still interested in variations as there seems to be many over the last 150 years

According to my new depth micrometer, my medical 14X17 X-ray holders are T= 0.30" and that is significant to 0.01 not 0.001"

I have a few 11X14 film holders that vary 'deeply'!

Shortly I will test my 11X14 Levy Copy Camera which has adjustable camera GG with a calibrated lever. T for that is 0.75" and can change T range by how I use it's massive holders


14x17 holders should not vary. There is an ANSi standard for them and that is a familiar size in the medical community.Of course, "should" is the operative word...

Don't forget this discussion:

https://www.largeformatphotography.info/forum/showthread.php?143185-ANSI-Standard-for-14x17-holder-seems-odd/page3

Good luck!

Mike

[Dugan]

I keep reading this as " Death to September".
Not to be pedantic, but it is "Septum".
Carry on.

[Tin Can]

Only Mods can adjust titles

Thank you!


I keep reading this as " Death to September".
Not to be pedantic, but it is "Septum".
Carry on.

[Len Middleton]

Randy,

Different vintage and different format of holder, but my two 8x20 (using my digital vernier, if that is not a contradiction) is: 0.434" and 0.456" on the one, and 0.414" and 0.442" on the other measured at the edge.

The two wooden holders are for a 8x20 Korona and likely original, implying built in late 1920s to early 1930s.

Hope that is useful, and good luck with your research,

Len

[Tin Can]

Thanks Len!

I bought a large base Digital depth/height gauge that is easier to use than a normal vernier slide caliper

Soon I will measure 7X17 Korona. One OE film holder and 2 S&S exact copies

Here are Richard Ritter specs as measured by him, from his website, http://www.lg4mat.net/FilmHolderSpects.html Great data!

Sometime ago RR made me five 11X14 film holders that are excellent and fit his custom back made at the same time.

[Len Middleton]

Randy,

Certainly the right tools make the job easier and does the job better (more accurate in this requirement).

As well as not having a height gauge, even if given one, would have no place to set the granite block to use it on...

The digital vernier is just a handy all around tool, but does have its limitations, especially in my hands... :cool:

Good tools can make a different, but outcomes are also dependent upon the skills of the individual wielding them.

Best wishes,

Len

[Tracy Storer]

I have two separate types of 14"x17" holders.

Measurements are only SO accurate, since the septums do flex. With that in mind, I took my measurements around the edges where the septums are let into the dados in the side rails.

Brubaker, made to fit an old ROC Carlton T= 0.315"

S&S, ANSI (more or less, they agreed with the Fidelity ones I once had) T= 0.339"

Both types are basically the same width, but the end flap is wider on the older style holders and the lock-rib location is different, nearly an inch lower (closer to the film gate) on the older style ones.

EDIT: Measurements and notes above.

[Michael Jones]

Randy:

You may want to review Richard Ritter's page on dimensions as well.:

http://www.lg4mat.net/FilmHolderSpects.html

Good luck.

Mike

[Tin Can]

I have, RR is a valuable resource

Thank you


Randy:

You may want to review Richard Ritter's page on dimensions as well.:

http://www.lg4mat.net/FilmHolderSpects.html

Good luck.

Mike