Search results

Back in the 1960's and 1970’s I think when hobbies was strong. Companies manufacturing hobby tools was strong too. I have seen this in hobbies getting smaller. I few idea's why but only what I think. It could be TV sport games , maybe cellphone/ computer games, stress of schools and college...

I wonder how most can hand hold the sextant to 20 seconds of the horizon and make adjustments. Everything else is easy to see. I have told by a few aircraft navigator can get within 25 miles or 2.76 minutes. This was done handed held * A-10A Sextant

I think most Uncle's volunteered. One cousin and father passed the psychical. His cousin was on train flight and chash less 100 miles from me. My father was get ship to go th battle of bulge. At gate your paper had error and had to stay. By fix the problem the war was over. Bothers was lucky...

I have call a government paid camping trip. All expenses camping trip under starts See world Having fun playing with guns. Great food Hunting What could go wrong When Sargent say do not worry about print it just health care You have helth care if something goes wrong. Only one downside the...

I agree Even castings tech is here. The first did it for model airplane engines. Besides my work I made reparts for large old engines too. Machine tools I used steel. It was easy learning experience and fun. I have tools out side making engine. From working with father in construction...

All stores I read your interest too. Thank you for sharing. Dave

In ww2 all Ham radios was stop until the end. I did of any help for war but never know In California the ham cubs would work with forests fires. Dave

When working sundials the calculations was fun lot of but if noon or 6am or 6 pm fewer calculations need. Then the time year . Here is simple chart for correction. Do not forget magic north correction This changes every year. (where at it about 0.5° each year.). So easy today with Excel...

There things we do not know. We get bits of information. No we have analyze what really is and why. Dave

That is what I am thinking too. I have not heard of fiber under ocean replacement . Maybe long range radio. Remember over 40 years ago satellites was going to replace under telephone wire. One thing about a major war they looking at any working engines and radio. That go news for owner...

Welcome to the group Dave

When I was going into mountains . I take a CB and 35 feet of wire great long range. I do a compass too. If going on water I take your advice and have more than one compass and a plastic sextant too. Good advice for all. Where live most think cellphone. It does not work in parts of...

Starrett. Machinist Level Sensitivity 0.005 in./ft., in degrees 0.0167 or 0.1" minutes or 6 seconds Source https://www.mcmaster.com/product/21515A24 Have you tried holding most levels at 1/2° This why I wonder how most can hold to 20 seconds and use the Saxton at same time? Dave FYI...

Calculation 1 Earth circumference(1/1) 24,900. ÷ Time in hours (1/2) 24. = (1/3) 1,037.5 ÷ Time in minutes (1/4) 60. = (1/5) 17.2916666667 ÷ Time in seconds(1/6) 60. = (1/7) 0.288194444444 × Mile in feet (1/8) 5,280. = (1/9) 1,521.66666667 A one second is 1,521.7 feet Calculation 1...

Interesting 1/2 mile that is 2,640. Feet. That is within 20 seconds by hand stabilizing only. I wonder if ever use a gyro stabilizing.? Dave

Both sextant and transit advertised accurate degree is 69.4 miles One minute is 1.6 miles 20 second is 0.386 mile or 2,037 feet. The sextant hand held on a rolling ship I wonder how close most could do on most days. Does any one know how close with handheld Sextant in real life ...

Thank you Dave

I have ask of license Engineers if ever used Calculus and they all had same answer never used Calculus.Thank God for not needing Calculus It is just a mistrey of life. ****************** On the lighter side I made to 70 today. Dave

It could be it not used more is most time it takes a lot time to do one calculation. Then they look for a formula that more or less fits to make easier. In some industries that OK. Today I like Excel. Some things I used basic and program. Both are great for tables. I just think ok the old...

I have made a lot one patterns. If broken part I use molding clay the in schools . The make the mold . Where clay was use I machine that aera out. Now have a like new part. Dave