I am going to guess 2756 is an iron for some particular purpose that held a
burning ember or coal. The holes kept the fire burning. The rounded corner
may have been the shape needed to apply the heat.
2759 I will guess are Q.C. inspector's stamps.
2760 could be either a machinist's or cabinet maker's depth gauge. If the
knob has graduations too, then it is certainly a machinists depth guage.
Actually that would make sense since the scale on the side is graduated in
increments of 0.025" so its purpose would be just to keep track of the
number of turns of the micrometer.
The engraved signature is probably that of the owner who may have also made
It has some common features to the one in this link:
Sounds like a good possibility, I've seen some unusual irons for hats but
none quite like this one.
Yes, depth gauge is what I was thinking but I'm still not sure for what
exactly. I'll ask the owner if it has any graduations. Not sure why the
smallest measurement on it would be in fortieths. Thanks for the link.
The linear scale on a modern micrometer is typically divided into fortieths.
Each turn of the 40 t.p.i. screw is 25 thousandths.
This depth gauge probably also has a 40 pitch screw, the linear scale would
keep track of the number of turns and the scale on the screw would give the
exact reading, just like a modern micrometer.
This is the same as a micrometer, which is built with a 40 TPI
thread, and the thimble is divided into 25 divisions, to allow measuring
to 0.001". You don't think of the major divisions as being fortieths,
but rather 0.025".
I must admit that I got a late start on this batch, and missed
The owner is wondering why the probe is pointed and not flat, anyone know?
Maybe it's because drill bits are slightly pointed.
Still not sure about the second item in this set but the rest of the answers
have been posted:
Drill hole depth gauges still use narrow pins for the reason you noted, but
then they do not need to have such large bases. Since this looks like a
one-of-a-kind, machinist-made tool, it could be the maker desired to make it
as general purpose as possible. A pointed tip also helps let you know when
you have just barely made contact by feeling resistance when it scrapes
sideways across the bottom. This might be helpful if the screw has some
BTW, if there are no graduations on the screw or nut, I have to believe
there is at least one indicator mark on it so the user could at least
estimate what fraction of a turn it has been rotated.
2756: It looks as if it were made in a welding shop. What about
applying flux to a hot joint while welding or brazing?
I imagine you'd burn a brush if you applied flux to a hot joint. If you
put paste in this tool and pressed it to a hot joint, perhaps the paste
would melt and flow through the eight holes in the bottom.
Perhaps it would stop flowing when you lifted the tool from the hot
metal. The holes in the door would show the user how much paste was left.
2755 is a soldering-iron rest. Stick the hot end in to keep it in
place on the workbench and to avoid accidents like starting fires,
resting your arm on the iron, snagging the cord and pulling the iron off
the bench, or dropping flammable things on it. I'd never do any of
those stupid things.
On 1/3/2013 4:05 AM, Rob H. wrote:
On Thursday, January 3, 2013 4:05:57 AM UTC-5, Rob H. wrote:
2759- I think since these are not mirrored, they are for stamping (pressing,
really) numbers into sand molds or uncured ceramic molds.
27690- Early penetrometer or similar, apply a set pressure and see how deep the
pin goes, or maybe just a simple depth gauge.
2755, looks like the screen around a paper air filter for a lawn mower.
2756, no clue.
2757, athletic supporter for Sumo wrestlers
2758, no clue.
2759, a way of measuring diameter of holes?
2760, depth gage for measuring holes?
Christopher A. Young
Learn more about Jesus
I need some help with the second and sixth items this week, I think I know
the last one but I'm not sure if it's for a specific use or not:
Posting from rec.crafts.metalworking as always.
2755) Looks sort of like a bench rest for a soldering iron, except
that I don't see internal support for the iron to keep it away
from the walls.
Perhaps a safety cage for a resistor dissipating a lot of power?
2756) Looks like a tool for pulling two pieces of modular construction
iron or aluminum into the proper relationship before bolting
2757) A portable stand for supporting something cylindrical. If it
were taller, I might think that it was for supporting the bar of
a set of barbells.
2758) For holding a tire open while either doing patching on the
inside or fitting it to the wheel, or stuffing in the tube.
2759) If the bottom end is the mirror image of what is shown, then
they are likely "inspected by No. xx" stamps.
If the visible end is what is used, it is for marking molds so
the number will be the right way around on the cast part.
2760) Perhaps a tool for shaping sand for sand casting of a bell? It
is placed and then rotated to sweep out the proper shape.
If so, then there should be a matching one for shaping the part
which defines the inside of the bell.
Now to post and then see what others have suggested.
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