The Pathfinder Three-in-One was a multiple attempt at bringing together a map measure with two other functions. Usually a compass and one other- either pencil, magnifier or plug tester. You will frequently come across examples on the second hand market which is either testament to their robust longevity, or that they were simply thrown in a drawer and forgotten about.
Made in Western Germany, probably mostly in the 1960s, the Three-in-One is based on the stock model Pathfinder map measurer. This is a single needle, dial measure with one of two paper dials inserted in the face. One choice was Statute miles/Kilometres/Nautical miles, the other dial face option was Inches to Miles/Centimetres to Kilometres. Once purchased, the owner could not change the paper dial to the other option. The choice had to be made when bought. There was also the option of purchasing a Pathfinder measure that had two measures, one on each side of the body, each with a different dial scale.
The metal bodied measure has two faces-front and reverse. Map measure on one and if not another measuring dial, then a simple magnetic compass on the reverse. The compass is not liquid filled and the needle fluctuates wildly before settling. However, it works. Cardinal and ordinal points are shown, incorporating 30° intervals, indicated with figures, around the outer edge. Between these, every 5° is included. And that is it. I wouldn’t like to rely on the compass as a primary navigational aid but if such a measure were carried in the glove box of a car then it probably sufficed reasonably well.
This is by no means a unique combination. There are a number of surviving examples of Victorian map measures that also include a compass, so common is the combination that many very cheap and cheerful Chinese made plastic bodied measurers produced today also have a tiny compass included.
A second choice of standard Pathfinder map measure has a long handle. This is a far easier measure to manipulate when following a line on a map, spinning the handle between the finger tips while trundling the measuring wheel along a path or line on a map is a relatively simple task. The same two choices of dial face were available with this as it is only the handle length that has changed. Again, a compass is included on the other side of the measure.
Pathfinder Three-in-One map measure- with magnifying glass
Based on the basic model Pathfinder, there were three further ‘three-in-one’ options available. These were easy for the manufacturer to create, instead of including a short or long handle with the standard body, one of three alternative handles was attached. The first Three-in-One shown here has a combination that has also been produced by just a handful of other manufacturers. Three Points of the Compass has seen Victorian and later measurers that also offered a magnifying glass as an option however surviving examples of the Pathfinder Three-in-One with magnifying glass are testament to the relatively large numbers produced and sold.
Pathfinder Three-in-One map measure- with pencil
This is a pretty handy little combination. I would think more drivers utilising a map measure on a trip would want a pencil than magnifying glass. I doubt many cyclists or hikers would be using it much as they will not be carrying a map measure on trail.
Twisting the barrel reveals the propelling lead/graphite. Sadly this is not a particularly well made product as the barrels frequently split on this measure, indeed my example is also split toward the end as a result of internal pressure and most I have seen for sale also exhibit similar failure. It still works though and the lead is replaceable.
Pathfinder Three-in-One map measure- with plug tester
This final example of the Pathfinder Three-in-One is an oddity these days. I do wonder if it were ever actually popular or of much practical use beyond as a map measure or basic compass.
I confess to never having used the plug-tester. In fact I cannot even find instructions on how it should be used. Even the instructions that come with this model actually fail to give any instruction. Is this because everyone knew how to use these? Three Points of the Compass has quizzed a few ‘old boys’ who run classic cars and has yet to come across anyone either with actual experience in using one of these or able to give any indication on how effective this particular tool is.
I am guessing that you simply touch a spark plug or tip of a lead running to one while an engine is running and it lights the little oblong window in the black handle to indicate a proper electrical charge is being delivered to the spark plug. Though I could be very wrong in this. The label on the box says ‘for running order‘, but again, I am not at all sure how this can be achieved or checked with this tool.
The Pathfinder Three-in-One is an interesting range of map measures. The company has deliberately sought to diversify a pretty standard piece of kit. I am not sure that anyone would go and buy more than one of the variants and all are possibly more suited to the motorist rather than the hiker. The name Pathfinder has been used with other makes of map measurer, though none seem to be of any noticeable improvement over the examples shown here.