View Full Version : Sine Charts....... ?????

JoeLee

03-24-2011, 01:54 PM

Just wondering if anyone knows of any companys that hand out sine charts like Starrett does with the tap drill charts. Either wall charts or poscket ones. I remember seeing one years ago in a shop but don't remember who or where it came from.

JL.........................

justanengineer

03-24-2011, 02:05 PM

Ask any of your friendly neighborhood tool sales people or write the company direct. They all hand them out occasionally.

Dr Stan

03-24-2011, 02:14 PM

Have not seen one for years as most people rely on calculators.

Paul Alciatore

03-24-2011, 02:29 PM

If you have Microsoft Excel on your computer you can easily construct your own table and print it. The formula for a sine in Excel is:

=SIN(PI()*A1/180)

The value of the angle is in cell A1 in this example. You can make a column of angle values in column A for example and place the formulae in column B. You would probably want to start a bit below row one so enter the formula in the first B cell that is next to an angle value in column A and change the "A1" to "A_", filling in the blank with the corresponding row number. You can then copy that formula down the B column for all the A cells that have angles in them. The fromula will adjust to the row numbers as it is copied.

Other spreadsheets work in a similar manner, but the actual formula may differ. In Excel, angles are measured in radians so you must divide by pi (3.141) and multiply by 180 (There are 180 degrees in pi radians).

Print it whatever size you want and spray with clear coat before hanging on shop wall. This will allow you to generate sine tables for any angles you commonly need. And you can quickly find another one and print it when needed.

Bmyers

03-24-2011, 03:37 PM

try Carr-Lane

http://www.carrlane.com/TrigBook/TrigBookIndex.cfm

Jaakko Fagerlund

03-24-2011, 04:20 PM

A low cost (10 EUR?) calculator has all the angles you need, so I don't see the point of those tables? Whenever you need that some particular obscure angle, it isn't on that chart most probably (Muprhy).

wierdscience

03-24-2011, 09:28 PM

Online Sine bar constant charts from Suburbantool-

http://www.auto-met.com/subtool/stcat/subtool_aids.html

Optics Curmudgeon

03-24-2011, 10:23 PM

Paul

You don't need to write out a conversion in Excel, there's a built in one. SIN(RADIANS(A1)) works.

Joe