There may be a point in time when your operations take place outside. It can be easy to leave your equipment outside exposed to the elements. You won't have to worry about doing this when you invest in a thread gage with a weatherproof design.
If you forget to take this gage in for whatever reason, the weatherproof design will keep it protected. You won't have to worry about issues like rusting or structural damage taking place. Rather, the thread gage will remain perfectly intact and you can use it perfectly the next day without any issues. Weatherproof thread gages typically have a powder coat on them for added durability.
If you plan on using the thread gage a lot around your work site to inspect various fasteners, then you need to make sure it has a comfortable design. This really depends on the portion of the thread gage that you hold onto while measuring fasteners.
Ideally, you want this portion to have an ergonomic design. Your hand will then be able to grasp onto it comfortably because its shape flows well with your hand's natural features. You can then hold onto the thread gage for hours and not suffer as much fatigue. This is so important for gathering accurate measurements.
If you're looking for accurate readings using a thread gage, then you should really consider one with a digital design. Rather than you physically looking at the measurements on the gage, you can just place it on the fastener, and readings will be calculated automatically.
You thus don't have to worry as much about human error as the digital thread gage is doing all of the work. These gages are more expensive than manual thread gages, but they're extremely convenient to use and can deliver accurate readings that you can trust. Just make sure you calibrate the digital thread gage before using it so that the data is precise.
There are a lot of industries that rely heavily on thread gages today to gather important details regarding fasteners. If you need to purchase one, take your time analyzing the available options. Focus on getting impactful features that allow you to get the most out of this device.