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My brother gave this to me and wanted to know what it is. It was given to him by his son in law farther. No one knows what it is. It has the 10 holes numbered, and the slotted side, 6 letters. Must be some type gauge, or jig, or set up tool.As you can see, it show model, which I think is years, 49 to 55, then list name of cars,Olds, Cad,Pont,Linc,Hud,Nash,Kais-Fr, and ******. Being it lists different brands, can't be a factory gauge, any ideas?

 

All of the codes are letter/number (5E, 4D, etc.). The number apparently corresponds to one of the holes, of which there are ten, apparently all different diameters. The letter corresponds to the rectangular opening, possibly showing different lengths as measured from the left end.

Now what it is we're actually measuring the diameters and lengths OF, I don't know. Screws? Dowels? Pins of some kind?

You're right in that it is certainly some kind of aftermarket tool as it has different makes across different manufacturers on it.

 

I'm gonna take a wild stab and say it's a HydraMatic linkage adjustment tool, since all the cars listed on it used HydraMatic at one time or other.

 

I believe you're correct. When reviewing the history of the Hydramatic via Wikipedia, the years and manufacturers align almost perfectly.

https://en.wikipedia.org/wiki/Hydramatic

Starting in 1948 Hydramatic became optional for Pontiacs (and was in 70% of them that year),[5] although Buick and Chevrolet chose to develop their own automatic transmissions. One million Hydramatics had been sold by 1949. In the early 1950s various manufacturers without the resources to develop a proprietary automatic transmission bought Hydra-Matics from GM. Users included:

• 1951–1957 Hudson
• 1950–1957 Nash
• 1951–1956 Nash Rambler
• 1957 Rambler
• 1958–1960 Rambler American (AT&T associated company fleet units only)
• 1951 Frazer
• 1951–1955 Kaiser
• 1954–1955 ******
• 1949–1954 Lincoln

 

I think we have a weener, but where does it adjust to, The lower bell crank linkage? The carb to bell crank? Gotta be somewhere critical that needs a precise measurement that weird shape would fit. Still a mystery to me...... Tedd

 

The distance between the gear selector linkage & the carb throttle linkage on the side of the transmission maybe? I can imagine not all manufacturers had the same carburetor, they all didn't have the same length of carburetor throttle linkage, they most probably didn't all have the same carb throttle body linkage, and maybe not the same style bracket for the throttle body linkage at the carburetor. Maybe that tool was used to get the correct distance between the gear selector linkage and the throttle body linkage for upshifting and downshifting?
At 1:48:00 in this video I'm not certain he has made an adjustment, but I'm wondering if the distance between the two linkages is what the tool might be used for?

 

Or, maybe the adjustment tool is used top-side on the engine between the carb throttle body linkage and (let's say) a carb/engine bracket? I don't know. Don't know how these were assembled. Is there like a roller pin located on a carb/engine bracket for the carb throttle linkage to attach to before it attaches to the carburetor? That distance might be important. No clues.

 

I would think lower TV rod adjustment at transmission end. Borroughs Tool made BT-33 and 33-1 for Oldsmobile, but a transmission shop that serviced all makes would have benefitted from a tool that covered them all.