On my 40-year-old HP 15C I get 10+ log sin 1" = 4.685 574 867 Excel gives me ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ?ÿ ...

The required Corner Record form is a fillable PDF.?ÿ You are supposed to make a JPG or BNP out of CAD and insert it in Acrobat (which is terrible soft...

@dave-karoly?ÿ Note that I edited my post after you quoted it. The log of sine 1ƒ? doesnƒ??t quite match my calculator: But the log of sine 3?...

?ÿ I believe those numbers at the bottom are a method of finding log sin and log tan for small angles more accurately than would be directly in the ...

I wonder why 5140 upped his own bid? I would gladly give $40 for that, 4 slide rules!

@gary_g?ÿ Medication time. I'm on my med.s, honest ?ÿ

Iƒ??ve seen variations in one State Forest we have. The Manual has instructions but those are not always followed. Best bet is to ask those who might...

One thing Iƒ??ve learned about the pre-calculator era is they would add negative logs to 10. Found that in the slide rule book. So that cleared up why...

I use pre-printed forms on card stock which I fold in half. I stopped using field books several years ago. They are easy to scan and I put the origina...

@dave-karoly?ÿ I believe that is actually a Monroe Comptometer. The one we use at the trolley barn for counting the daily fares was electric. No more...

I've seen that before, but I don't like it and it being in a lotted portion of a section makes it messy.?ÿ So,,,,,,,,,what does the patent say? th...

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My method is: 1. Donƒ??t take tests in linear fashion. 2. Easy questions first. If you donƒ??t know the answer in 2 seconds skip it. 3. Next easier...

Boundary Control and Legal Principles, Curtis Brown. 2nd edition is the best one and fairly common. Writing Legal Descriptions, Gurdon H. Wattles. T...

@dave-karoly?ÿ I believe that is actually a Monroe Comptometer. The one we use at the trolley barn for counting the daily fares was electric. No more...

@jbstahl What am I doing wrong? 45x8"=360"=30' so 45.5=30'4" not 30' as you say in your post. If 45-1/2 means 45 and a half links then that is 0.45...