hammer (claw hammer)

A hammer is a tool meant to deliver an impact to an object. The most common uses are for driving nails and pulling them out.

handle

face Flat surface used to drive a nail into a material.

Cheek The sides of the hammer head, between the claw and the face.

eye Hollowed-out part of the hammer head into which the handle is inserted.

claw The cleaved peen can be used to extract bent or partially driven nails.

Try square

The try square is used as a guide to draw lines at right angles to each other and to given surfaces; to erect and test perpendiculars to plane surfaces; to test the truth of a given surface at right angles to another surface; in short, wherever an accurate layout or test of 90 degrees is required

Barometer

A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. Pressure tendency can forecast short term changes in the weather. Numerous measurements of air pressure are used within surface weather analysis to help find surface troughs, high pressure systems, and frontal boundaries.

Adaptor

An adapter or adaptor is a things that adapts or a device that converts attributes of one device or system to those of an otherwise incompatible device or system.