What are these machinist tools called?

[Shiftless]

I can’t find any markings on them from a manufacturer or model number or anything else.
I rescued these two items from somebody’s damp storage. I brushed off the cobwebs and loose rust and sprayed on some WD-40. I assume they are tools to provide a reference point on a 3 dimensional object. The larger one has a double ended pointer that swivels. The big supporting arm rod has a coarse and fine adjustment screw.

If they have value, I will post them in the classifieds. Thanks!

 

[Jgaz]

I believe they are called a surface gage.
The one on the left is missing the scribe which would make it less valuable IMO.

I don’t know how much value try would have because most of their function is covered by dial or digital height gages which now are surprisingly affordable.

I haven’t used a surface gage since the late 70’s.

 

[slowtwitch73]

You can also put indicators on them.

 

[RTM]

I use them as indicator holders, also currently have one holding on my web cam at home.

For precision use, the bottom needs to be smooth and level, everything else is bonus.

The screw at the back can help dial in a precise height, at the cost of angular displacement.

Starrett Tools : Catalog No. 24 : L. S. Starrett Co. : Free Download, Borrow, and Streaming : Internet Archive

372 p., illus., 18.7 cm, trade catalog

archive.org

 

[slowtwitch73]

I always thought it would be cool to mount a little work light on one.

 

[cgrutt]

You can also put indicators on them.

I have one that looks similar with an old Starrett dial indicator on it can't say I've used it much but keep it because it so cool lol...

ETA pics attached

 

[driftpin]

I saw something similar in a H for H store, but I didn't buy it. I might swing by and see if it's still there. It was probably > 5 lbs, and solid metal pieces, adjustable for height. I have a dial runout gauge that I thought might work well with it, but I passed it up. The base was heavily-weighted and the vertical column was just-under a foot tall. It probably would be good for truing spoked wheels on bicycles or motorcycles.

 

[RTM]

The base was heavily-weighted and the vertical column was just-under a foot tall. It probably would be good for truing spoked wheels on bicycles or motorcycles.

Starrett Tools : Catalog No. 24 : L. S. Starrett Co. : Free Download, Borrow, and Streaming : Internet Archive

372 p., illus., 18.7 cm, trade catalog

archive.org

Couple of pages later in the link I have above.

 

[cgrutt]

Ha you guys inspired me to clean it up. Still has a way to go but much better than it was!

 

[Shiftless]

My 2 are currently listed in the GJ classifieds.

 

[Firebrick43]

I believe they are called a surface gage.
The one on the left is missing the scribe which would make it less valuable IMO.

I don’t know how much value try would have because most of their function is covered by dial or digital height gages which now are surprisingly affordable.

I haven’t used a surface gage since the late 70’s.

They can still do things that a height gage can not.

For example. Set the ball of the arm up on the bottom and install an indicator 6" up. Place the ball against the side of a good known square setting on a surface plate.

Adjust the indicator to read zero also against the square just 6" up from the plate. Now you can take the surface gage and set against a part at an angle so the ball is touching and pivot it around and see how far out of square its machined by the measurement on the indicator.

We measured machine ways for perpendicularity when we were scrapping them in.

 

[RTM]

My 2 are currently listed in the GJ classifieds.

Pm coming

 

[nadogail]

i use mine as a base to mount a Dial Indicator when I am checking the alignment of two rotating items.

 

[Neighbor]

surface gauge
your's appear to be Starrett
https://au.starrett.com/js/blank.png
As a patternmaker, I used them every day.
combined with a rule holder,
https://au.starrett.com/js/blank.png

 

[Cleave]

I find a surface gauge very helpful for layout on occasion, as you can easily and accurately scribe a line on, around, or inside something that may otherwise be hard to accomplish. The dial indicator is also useful on it, but that can't scribe. I wouldn't be without one in a fab shop.

 

[ChefRex]

I put one in Evaporust last night, now I know what it’s called, lol.

 

[MikeOxard]

I can’t find any markings on them from a manufacturer or model number or anything else.
I rescued these two items from somebody’s damp storage. I brushed off the cobwebs and loose rust and sprayed on some WD-40. I assume they are tools to provide a reference point on a 3 dimensional object. The larger one has a double ended pointer that swivels. The big supporting arm rod has a coarse and fine adjustment screw.

If they have value, I will post them in the classifieds. Thanks!

They are surface gage checkers for engineers.