This is a Krikit V-belt tension gauge from Gates. Proper v-belt tension is important for belt and bearing life. This gauge can measure 30 to 150 lbs of tension on belts up to 7/8″ wide. Tests have shown that estimating is very inaccurate when adjusting belt tension.
Although newer vehicles usually have automatic belt tensioners, there are plenty of other things around the shop with v-belts. Compressors, blower drives, and shop machinery use v-belts. Use the manufacturer’s specifications for belt tension if available. I downloaded an iPhone app from Gates that can calculate belt tension.
Older power tools were single insulated. The wiring, motor, and switch were insulated from the case, but the case was made of metal. It was able to conduct an electric current. If an energized component within the tool shorted to the case, the case could become energized. A third wire was added to the plug. This third ground wire was connected to the case of the tool. If an energized component shorted to the case, a large current would flow through the low resistance ground wire and clear the fault (trip the circuit breaker).
Newer power tools are double insulated. The wiring, motor, and switch are insulated. The case is also made of a non-conductive material such as plastic. Many of these newer tools do not need a three conductor plug. They are much safer to use, especially in damp conditions.
Do not use an older metal case tool if the plug only has two prongs. A three conductor plug can be added as a replacement. The third conductor (green) is attached to the case of the tool with a screw. The ground screw is usually colored green. The ground conductor can be tested without disassembling the tool. A multimeter, set to measure resistance, can be connected between the ground prong of the plug and the case of the tool. The resistance should be very low. It is a good idea to use a ground fault protected receptacle with a single insulated tool. A GFCI should be used when any tool is used in a damp location.
A flexible tape measure is a great tool to add to your kit. Use them to measure around curves and odd shapes. They will also fit into tight locations. Cut them into shorter lengths when needed. Find them in the sewing supplies.
A couple of years ago I was looking at the plumbing tools at the Home Depot. I saw a Zip-It drain cleaner hanging on the rack. At less than $3, I had to pick one up and try it out. This tool is great for removing hair clogs from bathroom sink, shower, and tub drains. At 20″ long, it can easily reach into the trap where clogs most often occur.
Unlike a snake, this tool is easy to use and can get around “built-in” stoppers. It is better for the environment than chemical drain cleaners. I’ve cleaned and re-used this tool for the last couple of years and highly recommend it. If you don’t want to deal with a disgusting hair blob, they are cheap enough to just toss in the trash.