Help with gear tooth profile

[nnam]

Is it possible to just compare the image below with generated tooth profile to figure out what pressure angle and other parameters for these gears?
It comes from a Bridgeport clone, but the parts are not exactly the same.

 

[RandyWilson]

Give the diameter and tooth counts for the two. From that we can determine pitch. With those numbers in hand, you can then look up gears on places like mcmaster and compare yours to PA14.5 and PA20.

 

[Ulma Doctor]

20° is the most common

 

[benmychree]

It may be a module gear if made in Asia, they are nearly all 20deg PA.

 

[MyLilMule]

Diametral pitch is roughly = (tooth count + 2)/diameter rounded. For example, a 32 tooth gear with an OD of 2.125" would be (32 + 2)/2.125 = 16 pitch.

The two most common PAs are 14.5 and 20 degrees. 20 degrees is the most common, and I believe many of the Bridgeport gears are 20.

Then try Boston Gear to see if they may have a matching gear. You could also read out to H&W Machine to see what they can tell you for your specific machine.