The 4 pc. Alvin Precision Measuring Set is a quality collection of components geared towards providing accuracy to professional mechanics, machinists and metalworkers. Set includes: 6 inch rigid stainless steel rule clearly marked in increments of 8ths, 16ths, 32nds, and down to 64ths inch, a micrometer for delicate work up to one inch, a 0 − 6 inch caliper with an easy-to-read dial, and a durable tungsten carbide scriber for clean markings which features magnetic pickup to protect your project. The sturdy compact carrying case protects your investment and includes detailed instructions for all components. This set features everything you need for delicate and sensitive work where fidelity of measurement is essential. The all-in-one set is a perfect starter kit or a durable and reliable upgrade to your present set, constructed with attention to detail and craftsmanship intended to last.