What kind of caliper is L-shaped, with a scale, and long shank?

The correct choice refers to a Vernier caliper, which is known for its precise measurement capabilities. A Vernier caliper typically features a main scale and a sliding scale that allows for measurements to be made with high accuracy, often down to fractions of a millimeter or an inch. The L-shaped design and long shank are characteristics that aid in measuring the dimensions of objects, providing the user with the ability to measure both the internal and external dimensions as well as depths.

The ability to use the scale on this type of caliper enables readings that are more precise than standard scales would allow. This makes the Vernier caliper particularly useful in mechanical applications, where exact measurements are crucial for ensuring the quality and functionality of components in gas turbine systems and other machinery.

Other types of calipers mentioned do not fit the description as accurately. A hermaphrodite caliper is primarily used for laying out and measuring the transfer of distances and does not feature a precise scale suitable for fine measurements. A sliding caliper is too vague, and it often refers to different types of calipers that do not have the specific L-shape with a long shank as highlighted. Telecopic calipers are specialized tools used mainly for measuring the internal dimensions of holes