This outside micrometer boasts a measurement range from 0 to 25mm. Measurement can be taken all the way to 0.01 of a millimetre accuracy. Use it for a precise measure of brake rotor thickness – or any flat, cylindrical or spherical objects. Knowing the name of each part will help you understand your micrometer. The frame is the base of the whole tool, with the spindle, and the anvil at the top. The ends of the spindle and anvil form the measuring faces. The sleeve is the part which displays whole and half millimetre measurements. The thimble rotates around this as the spindle moves in and out. On the end is a ratchet and a locking lever sits on the side of
Now twist the ratchet until the spindle touches the anvil, and the ratchet clicks. The mircrometer should measure zero here, but if this is not the case – lock the spindle firmly in place and use the included wrench to rotate the sleeve until the zero lines up. Now that it’s cleaned and zero’d, it’s time to take a measurement. Place the item to be measured in the frame of the tool and rotate the thimble until the spindle nears the surface to be measured. Now use the ratchet to close the spindle in until the ratchet clicks. At this point, you can take the measurement – or lock the spindle, remove the micrometer and then read the measurement. The top row of markings on the sleeve are whole millimetres, the bottom row are half millimetres – and the markings on the thimble are one hundredth of a millimeter. To determine an accurate reading, take the number of whole millimetres, add the half millimetre if applicable – then add the number on the spindle. Place a drop of machine oil on the spindle once in a while, keep it safe from knocks in the nifty little storage case – and your ToolPRO Outside Micrometer will deliver accurate measurement for years to come.
Features
- Precisely measures the thickness of cylindrical, spherical and flat objects such as brake rotors
- Easy to read
- Sets the measurement for accurate reading
- Ensures constant force when measuring
- 0-25mm range
- Sleeve reading divided into 0.50mm increments
- Thimble reading divided into 0.01mm increments
Note From Nighthawk this is a very cheap small Outside Micrometer, and to be fair while it is okay for what I use it for I would not use it for absolute accuracy etc.
