When I worked on cars I found that having the right tools is essential for any job. I work on satellites, and computers now, but I have worked on cars in the past.
While working on cars I had to use a mig welder, computer diagnostics tools, brake tools, and much more. With computers, and satellites I use satellite pointing tools, and a lot of electronic testing tools.
If you don’t have the right tools, then don’t try to do the job. It may never get done right, and we don’t want our customers mad about a half ass job.
I have met many technicians that try to point satellite dishes with old technology. Keep up to date, or get out of the business.
There aren’t many jobs that don’t require NO tools. They may be expensive, but they are important.