Vintage AQUA SURVEY & INSTRUMENT CO. OHIO Magnetic Locator Surveyor Compass

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Vintage AQUA SURVEY & INSTRUMENT CO. OHIO Magnetic Locator Surveyor Compass:
$34.00

AQUA SURVEY AND INSTRUMENT CO. OHIO Magnetic Locator Surveyor Compass
This compass appears to be in working condition...
It is 3 1/8\" across by 2\" wide by 3 1/4\" tall.
It is marked:AQUA SURVEY AND INSTRUMENT CO.
CINCINNATI, OHIO
PATENT NO. 2775736
(On other side)
* N.W. ** N. ** N.E. *Any questions, please ask...Additional information from an internet website:Reading water meters is made moredifficult in that some are not read frequently and so they get hiddenby weeds, dirt blown by the wind, etc. In order to make findingthem easier a number of products were developed, the Aqua Locator isone of them. This product is not a \"water witching\" device butrather a magnetic dip needle that\'s optimized for locating ferrousmetal in the ground, like a water meter, but can be used for findingany ferrous metal that\'s relatively near the surface. It\'s acompass that works on the up-down part of the field (which is strongerthan the horizontal field in most of North America).
INSTRUCTIONS
for use ofthe
AQUA MAGNETIC LOCATOR
LOCATES VALVE BOXES,SURVEYOR\'S STAKES, MANHOLE COVERS
AND OTHER CONCENTRATED FERROUS METAL OBJECTS.
The following is a seriesof steps in the use of the Aqua Magnetic Locator. Please follow them carefullyfor 100% satisfaction:1.Open flap on leather case. (Instrument need not be removed from case.) TurnAQUA
on its side, bottom of case toward you,NW, N, NE dial level. In this position, your
AQUA is a compass. Point dial portionnorth until red end of needle points exactly at
\"N\". You now have true northposition.2. Turn AQUA upright,point gold arrow on leather case to \"N\", as was indicated
by instrument in step #1. (When leather case is very new, it ishelpful to fold
the flap down firmly so that it will remain in position when inuse, and not
obscure the dial.) Using carrying strap, lower instrument tojust a few inches
above ground, holding instrument carrying strap over fourfingers. Holding strap
by four fingers minimizes chances of instrument twisting out ofposition as
you walk. Be sure that \"N\" is still pointing north.3. Begin\"walking\" the instrument in parallel paths, about 12to 15 inches apart,
until the red end of the needle dips and the black end ofthe needle appears.
Find the point of maximum reading: that point at which blackend comes nearest
to \"90\" mark. At this point, walk at right angle toformer path, still keeping
instrument pointing toward north, until maximum reading isfound on right angle
path. This is the location of missing valve box or stake.When object to be located is very deep in the ground, orheavily covered, a full deflection
to \"90\" mark cannot be expected. In cases ofthis kind, \"70\" or \"75\" may be the best reading obtainable.In areas where there are high voltage overhead wires,there is usually electrical disturbance,which will cause the red end of the needle to show on dial. This does nothamper location operations. When over the object, red end will disappear andblack end will appear on dial.Where shrubbery or other obstructions prevent the strapmethod of holding instrument, AQUA may be removed from its leather case andmetal rim pulled up and used as a
handle. However, whenever possible, keep AQUA in leathercase, as a protection
against possible damage from bumps and jolts.THE AQUA SURVEY & INSTRUMENT CO.
7041-43 VINE STREET AT SEYMOUR CINCINNATI, OHIO 45216PHONE: [phone removed by ] var itemNumber = window.ItemID ? window.ItemID : -1; function passpara(){return + itemNumber + \'&baseurl=\'+escape((function(){var d = return d })());}
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