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I know there are advantages to the click type torque wrenches, like you don't have to be able to see a scale when using it, but the beam type has some advantages too.
First, when tightening a bunch of bolts in sequence, you don't have to keep stopping and resetting the wrench after each time around the pattern.
Then there's the big advantage that there's really nothing to calibrate, as long as the pointer points to zero when there's no torque on the wrench. As long at the beam doesn't get damaged or very rusty, for example, it's going to stay calibrated for longer than a human lifetime.
Also, the range is huge. My big beam type goes to 100 lb-ft, but can be easily used way down to 5 lb-ft. My small one reads up to 600 lb-in, but can be accurately read down to 25.
I don't own a click type, and I admit that on a rare occasion I've had to place a small mirror somewhere so I could see the scale, but that's about twice in my 60 year life.
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