Wall Drilling Distance Template

Purpose of this drilling template is to make sure that two holes have a precise distance from each other, in this case it's 145 mm. But the design is pretty simple and easy to buiuld for other distances.
The way you use it is drill one whole first and then stick the small bolt into the hole. You can then step back and adjust the angle to your needs, probably works best vertically. The human brain is usually very good at telling angles so you probably don't need a spirit level. But if you wanna