Plastic is often used to make accessories for outside micrometers. Rubber is used to make micrometer ball attachments. Wood is commonly used for carrying cases.
- Carbide is harder than steel or cobalt steel, making it more wear resistant and helping to extend tool life. It is used on the tips of some micrometer measuring faces for durability.
- Cobalt steel is harder than steel, making it more wear resistant and helping to extend tool life.
- Stainless steel resists scaling and corrosion.
- Steel is a good general-purpose material and is rust resistant.