Question

Name the instrument which can measure accurately the following:
(a) The diameter of a needle,
(b) The thickness of a paper,
(c) The internal diameter of the neck of a water bottle,
(d) The diameter of a pencil.

Answer 1

A measuring device is an apparatus for estimating an actual quantity. In science, property assurance, and engineering, a determination collects and compares physical measures of real-world objects and situations.

Complete step-by-step solution:
Screw gauge: screw pitch gauges are utilized as a tool to find the pitch of a thread on a screw or in a damaged hole. This tool is utilized as a correctness measuring device; it enables the user to obtain the profile of the provided thread and quickly arrange the string by shape and pitch. This device also conserves time in that it removes the need for the user to estimate and measure the pitch of the threaded piece.
Vernier scale: A Vernier scale is a visual aid to precisely measure reading between two outset showings on a parallel scale utilizing mechanical incorporation, enhancing the resolution and decreasing the measurement unpredictability by utilizing Vernier acuteness to decrease estimated human fault.
Estimating just the radius of the circle if it is a massive object. The radius is expressed as the length from the centre to any location on the circle to its end. Increase the radius by two to measure the diameter. A screw gauge is applied to find the thickness, and the Vernier calliper is utilized to estimate the length.
Screw gauge is used to find the diameter of a needle, the thickness of a paper and the diameter of a pencil.
Vernier calliper is used to determine the internal diameter of the neck of a water bottle.

Note: The primary difference between a screw gauge and a vernier calliper is that a screw gauge is used to estimate only external measurement, while a vernier calliper is used to estimate external and internal measurement. Screw gauge estimates the thickness and diameter of a tiny object just externally. However, the vernier calliper estimates the thickness, depth, external and internal object's diameter.