Build an Analog Electricity Usage Meter

Step 5 Protect the Meters

This was achieved by mounting a piece of acrylic over the gauges. It is wise to prepare this before mounting the meters. The less drilling, sawing, and adjusting done after the sensitive movements are attached the better.

1. Cut the acrylic.
This was salvage from an old computer case that I cut to size on a table saw. This material is available at most hardware stores and they will often cut it for you.

2. Drill holes.
Check your layout so that the mounts do not interfere with the meters or are too close to the sides of the box.
Start by drilling through the acrylic. Then place it on the front panel and drill the holes into the wood.

3. Insert the mounting bolts.

4. Cut spacers from brass tubing.
A small piece of brass tubing can be cut with a rotatory tool or a hack saw. These will allow space for the meters.

5. Place the acrylic

6. Use nuts to hold the acrylic in place

7. Use a rotatory tool or hack saw to cut the excess length off the bolts.
Try to ensure that you cut the same amount off each one leaving a small amount for a rounded end nut.

8. File the end and screw on a rounded end nut.

9. Once you are satisfied remove the acrylic and set it aside. then you can mount your meters.