What is this meter for?

[mick56]

I got this meter in a box of old junk at a garage sale. The meter is in its original box, that has nothing on it. No name on the meter. Two terminals on the back of the meter, one of them is marked +. Anyone know what it's for?

 

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[Plug N Play]

Somebody please solve this one. It kicked my butt.
Using keywords, Yokogawa Panel Meter got me to these:

 

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[Hillbilly Prince]

Try asking the peole you bought it from.

 

[YumaMarc]

View attachment 1753885

WOW! I worked in mining most of my life, and I never saw one of these. A CAT-797 with up to 400 ton capacity! A rule of thumb in mining is that one ton of ore equals one cubic yard. Thus this truck is capable of hauling 400 cu yards. I've see lots of the "little" Darts and HaulPaks with capacities from 40 to 150 tons, and a couple 200 ton CATs, but nothing like this.

Evidently there has been some real progress in engineering of tire weight capacities also. It used to be that 11 foot tires were the standard, because beyond that they were unstable due to their own weight. I see this has 6 13-foot tires to carry all that weight. Largest I've seen had 10 11-footers to carry 250 tons/yards.

 

[Anduril]

It's the readout from an early metal detector, and it indicates how many yards the operator had searched since finding the last silver coin.

Well then, sign me up!

....since it only goes up to 300 yards.
What is that.... 20 minutes if you rush it?

 

[YumaMarc]

It's the readout from an early metal detector, and it indicates how many yards the operator had searched since finding the last silver coin.

Oh, Snap! Of course I know what it is! It's the dial and readout for one of those Chines-built Long Range Locators! How could I have missed that obvious conclusion when the science is staring me right in the face?

 

[Doubter in MD]

LRL range finder meter! Of course! Great ID YumaMarc!

This is obviously the "pinpointer" gauge, used after the LRL has located the approximate location from hundreds or thousands of miles away.

 

[DCMatt]

Here is a ad from a 1957 Automotive Industry magazine:



It refers to a textile slasher (fabric cutter) operating at speeds of 28 to 225 yards per minute. They had to monitor the speed of the machine somehow...

 

[Doubter in MD]

Here is a ad from a 1957 Automotive Industry magazine:

View attachment 1754189

It refers to a textile slasher (fabric cutter) operating at speeds of 28 to 225 yards per minute. They had to monitor the speed of the machine somehow...

It could be for something like that. The "red" zone might be indicating that the machine is running too fast.

And while I'm pretty sure the gauge isn't for weighing truck loads I stand corrected on your dump truck not being able to hold 300 Cu. yards. It probably can.

 

[Plug N Play]

The textile industry is a good possibility, including yarn.
Crosswinders - Bobbin Winders - Cone Winders brings up a huge area of possibilities, many running in this range.