Description of a Screw gauge:
The instrument is based on the principle of micrometer screw or screw gauge and it is used to measure up to 0.01 mm with greater accuracy. The screw gauge consists of a U-shaped frame of gun metal, a stud or anvil, a sleeve cylinder, a spindle, thimble , the main scale,the head scale and a ratchet. It can be used to measure the thickness of different objects like wires, pencil,pen,etc.The screw gauge works on the principle of a screw in a nut. there are two types of motions associated with this screw like linear and rotational motion.
Features of Screw Gauge:
Theory: It contains fully detailed and clear explanation about screw gauge
parts: Each and every parts of screw gauge are explained by the visual presentation .
Experiments: Pitch and least count, zero error, finding the diameter.
Practice: You can easily practice with four objects (wires,pencil,pen,etc.)
Try out: Parts, quiz, score board.
These features are really very useful to know the screw gauge or micrometer screw.