Lyman7832248 Electronic Digital Trigger Pull Gauge,Multi

Excellent quality tool that should last many years.

I don't like just guessing on what the trigger pull is and wanted to know and bought the Lyman from the reviews. I also want to check the Lyman for accuracy. I have a friend that works in a lab where they use scales or balances that go to 3 place decimals.I ask if he could loan me several accurate weights for a total of 10 pounds, 1 - eight ounce, 1 - four ounce and 4 - one ounce weights. He said the tolerance on the pound weights were .04 ounce and less for the other weights. I wanted to test all through the range of pull weights but the only weights he had was a one pound weight, a two pound weight and a eight ounce weight.Testing 5 times on all tests, the average for 2 1/2 pound weight (2 pounds - 8 ounces) was 2 pounds - 8.2 ounces on the Lyman3 pound weight was 2 pounds - 15.9 ounces (just under 3 pounds)3 1/2 pound weight (3 pounds - 8 ounces) was 3 pounds - 8.1 ounce ( .1 ounce (1/10 ounce) over 3 1/2 pounds).This unit proved, to me, it was accurate.One other thing I noticed when testing on a AR10 with a replacement, adjustable trigger that has a very short over travel of .015" is the reading seemed to break an ounce or so less by watching the scale while pulling. I set up my video camera and after recording 5 pull tests, I slowed down the video and sure enough, the trigger was breaking an average of 2.1 ounces less than what was recorded.Pulling on the trigger with the Lyman would continue after it broke and hit the stop and add a small mount of pull weight to the overall reading. 2 ounces isn't anything to worry about, just as useful information.Reading after the trigger broke in 5 pulls, an average of 2 pounds - 11.5 ounces was shown, but looking at the video and slowing it down, the trigger actually broke in 5 pulls at an average of 2 pounds - 9.4 ounces.The only weights he had was a one pound weight, a two pound weight and a eight ounce weight

Well made nearly all plastic gauge with an LCD display. Easy to read and easy to use after you become familiar with the operation. Comes in a decent plastic case with instructions. The arm that has the trigger contact pad is made from steel to keep the readings consistent. Has a average feature that averages multiple tests to give you more accurate measurement. Price is reasonable compared to most of the manual spring type gauges. Yes it's more expensive but if you want accurate easy read and easy to use pull gauge this is a good one.

The best news is it works as advertised. Consistent smooth pull at the same point on the trigger and the results are good enough for me.Disclosure: I am doing product improvement and development for a long time. The review is about the box the gauge is coming with.It looks good: Lyman's orange bottom and transparent top, locks are recessed and hinges protected with small shields.Logo would be better printed horizontally, but that doesn't affect anything.Now, open the box. The transparent top doesn't open fully sticking up. Push it down and bottom half is tilted. Push on the meter in the box - box slides and clear plastic top "jumps up". My guess would be that the designer (or his boss) wanted to lower the hinges bellow the split line so they don't stick up or reduce the production cost.Fix for this small problem. For Lyman - if you lowered the hinges from the split line, you have to make upper half lower compare to bottom half by twice as much. I know, easy at design, but now it will be a new or modified mold.Cheap fix - attach small felt pads (1/4" thick) in each corner on the bottom of the orange half.The second issue. Well, the gauge has to be taking to another place sometimes. Caring it face up isn't always practical, so it is tempting to put the box with the gauge on the side (and in the bag with other stuff). Well, don't be surprise discovering that it is on and probably was on the most of the trip. The problem is that although the gauge has foam padding on the bottom and on the sides, nothing prevents it from leaning against the top half. Not a problem yet. Well, whoever designed the gauge paid particular attention to ergonomics and did a good job. The orange buttons are fairly big and easy to find, but as they are not recessed the gauge can touch the cover with the buttons (when box on its side) turning the device on.Fix - use two self-adhesive elastic transparent bumper pads 1/8" thick. Attache them to the top half of the box from inside so they are against the face of the gauge to the left and to the right of the screen (there are enough room). You can add third bumper against the lower part of the handle,(this can be a bit thicker).Well, killed twenty minutes of my time - hope, someone find it useful. Thanks.