The brand new IP67 Twin-Cal 00590319 with really large digit display
This is the best, most basic Swiss-made digital caliper you can get with a thumb roller. It offers simple switching between inch and metric. Nothing fancy, nothing confusing. Just slide and read. But wait... there's more!
You can take depth measurements with the .060" diameter round rod which protrudes from the rear end of the calipers. You would easily be able to measure the depth of small holes, for example. Or, you can order the same model with the standard flat depth rod.
What's really cool is that you can turn this into a wireless SPC caliper. An optional transmitter very simply replaces the large battery cover. Or, if you still have a fetish for electrical wires, you can run a cable from the battery cover to your PC's USB port. Okay, these add-ons cost money. For one thing, you will also have to buy TESA software (Stat Express or Data Direct) in order for all this to work. Suddenly your basic, simple digital caliper is an investment. But it's nice to have options. Like those digital cameras with a thousand and one settings. It's nice to know they're there but let me just point and shoot.
(For the record: both Mahr and Mitutoyo make wireless calipers that do not require software if all you want to do is input raw numbers onto a spreadsheet.)
The manufacturer supplies a hard plastic case and a manufacturer's certificate of calibration with data. Cables, transmitters and software are sold separately.
Are you new to IP67? It's a somewhat cryptic way to tell you that this caliper, and other IP67 gages, will be able to withstand a considerable amount of moisture in the form of water spray, mist and dust without going haywire. You should look for this if you work in such an environment. It does not mean that you will be able to take it scuba diving, though.