Abbreviation TDL?

[Belanger]

A technical spec has a flatness feature control frame with "TDL KK" The KK is a value in a table later in the spec (0.005" for my use) but the "TDL" is something I've never seen before. My first guess is that it means to look the KK value up in the table -- the acronym could stand for "Table Dimension Line" or maybe "Total Dimensional Limit."

Any other ideas, or does anyone know for sure?

John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems

 

[fsincox]

JP,
What Spec?

 

[Belanger]

MIL-DTL-3922/52D (for flanges, waveguides)

John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems

 

[CheckerHater]

Providing that online search doesn’t return anything better than “Tokyo Disneyland”, your guess is probably still the best guess.
Are you sure it wasn’t simply “TOL” - tolerance?
Bad photocopy or typo, you know...

 

[Belanger]

See attached graphic -- it's near the center (maybe a little below center) of the picture.

(It must be a really old spec because they are using symmetry along with the pre-1994 datum feature symbol.)

John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems

 

[CheckerHater]

Anybody wants to bet the graphic is based on somebody’s bad handwriting?

 

[fsincox]

I think CH is right, notice the tolerance of ".02D". It does not look like it is really associated with the "D" in the table which says "D BSC"(basic). This is 1973 (or earlier) style with the datum arraignment.
Frank

 

[SeasonLee]

CH, You are right, look at this.

Season

 

[SeasonLee]

Sorry, Frank, I didn't notice your post.

Season

 

[fsincox]

Season,
No Problem, I do think you helped clarify, I was just thinking after I had posted, "I should have pointed the location out specifically"!
Frank

 

[Belanger]

Thanks all! I just didn't look around enough to realize it was a typo.

John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems