Thanks, I will open it up and have a look, its been shelved for years because of this,... I randomly took it out of its case the other day and just looked at it, and thought " what a shame "...
My first real digital torque wrench (Craftsman Digi-tork is still mechanical) was a Gearwrench 85077, which was bought several years ago for $20 as "not powering up, for parts only", intended to use it as a break bar. When I received it, I'm surprised that it actually worked perfectly, all I did was 1 minute of cleaning the battery terminals with a scratch pen and there were no obvious signs of corrosion, which led me to suspect that the person who sold it might have been using bad batteries.
... If given a choice beteen a digital caliper, dial indicator, or torque wrench and conventional mechanical ones..........I'll take the mechanical ones. ...
For an experienced professional, that maybe true, because the "feel" that acquired from years of experiences certainly played a part in the overall accuracy.
For greener hands, digital has big advantages. I used to torque spark plugs with a Craftsman 3/8 inch pound torque wrench. At lower setting, the click is very vague. I was still pulling way past the specified value. Luckily, I stopped, or the spark plug could have snapped. That prompted me to get digital torque wrenches.
Digital wrench has real time torque values, approaching warning light, reached light, loud beep, and vibration in the handle, all help to avoid situation like that. I couldn't have torqued a cover on the engine with 16 bolts evenly without a digital torque wrench. I think for a 1/4" drive torque wrench, digital is superior, because mechanical wrenches tend to have light/vague click at low settings. 3/8" and 1/2" torque ranges, not so much. For lug nuts, I still prefer mechanical.