What is Copper Sulfate applied to?
Only applied to ferrous metals
Sulfuric acid reacts with non-ferrous metals.
What metals can Vermillion, Powder & Shellac be used on?
- Aluminum
- Copper
It can be cleaned using alcohol.
What is Chalk applied to?
Applied to hot rolled steel & castings to make layout identification
It helps in marking for layout purposes.
What is Limed Alcohol used for?
Applied to large size castings & hot rolled metal
This paste mixture sticks and is not easy to remove.
What are Bottom Plunger Dials used for?
- Comparative measurement
- Monitoring movement
- Shaft or coupling alignment
- Shaft centering (lathe alignment)
- Checking shaft straightness
They are useful in precision measurements.
What is the most common type of dial indicator used for shaft alignment?
Back plunger dial
The spindle is mounted at 90° to the dial face.
What is a potential error in dial indicators?
Cosine error
Movement or measurement will appear larger.
What is the finest caliper reading?
0.001 inch
This indicates high precision in measurements.
Are Digital Calipers as accurate as micrometers?
No
Digital calipers are generally less accurate than micrometers.
What is the unit for angular measurements?
Full circle 360°
This is the standard measurement for angles.
How many minutes are in 1 degree?
60 minutes
This is part of the angular measurement system.
How many seconds are in 1 minute?
60 seconds
This continues the subdivision of degrees.
