Disc type outer diameter micrometer 256M series from Starrett, USA

Disc type outer diameter micrometer 256M series from Starrett, USA

Product Name: Disc type Outer Diameter Micrometer
Brand: Starrett
Place of Origin: USA
Model: 256/256M series

Introduction to 256M series external micrometer:
The 256M series external micrometer is used to measure the thickness of workpiece cross-sections such as ribs, convex surfaces, fins, and cutting edges on forming tools, as well as the thickness of gear chord teeth. Due to the large measurement surface of the anvil and core shaft, the outer diameter micrometer with a measurement range of 1 'and 25mm can also measure the thickness of thin sheet materials such as paper, cardboard, rubber, and plastic parts.


Characteristics of 256M series external micrometer:
Readability characteristics
● Adopting Stellite chrome plated material to prevent rusting
Adopting advanced staggered sleeve design and clearly labeled numbers to obtain accurate readings
● Easy to read numerical readings - Imperial models offer all thousandth inch readings
Engrave a fractional to decimal conversion table on the frame of the 1 'and 2' external micrometers for quick calculation of readings

Easy to operate characteristics
Adopting a balanced framework and differential simplification design to ensure ease of operation and convenient reading
● Adopting a circular rolling nut locking device to ensure fast and correct locking of the core shaft
● Adopting a ratchet fine adjustment fast forward device to ensure constant force measurement and quick adjustment
Cleverly using a conical frame to measure narrow grooves and workpieces with tight clearances
The diameter of the anvil and core shaft measuring disc is 1/2 '(12.7mm), and the blade thickness is 0.015' (0.4mm), ensuring that it can extend into narrow grooves and grooves for measurement
Both rotating and non rotating core shafts have two measurement ranges of 1 'and 25mm

Accuracy and long service life characteristics
● Structure of extremely hard forged steel block
High hardness and stable core shaft (the essence of our accuracy)
● Quick and convenient adjustment
● Stahl's unique craftsmanship
The measurement accuracy on the entire surface is ± 0.00015 'or ± 0.003mm, while the measurement accuracy on the edge is ± 0.0002' or ± 0.004mm

Parameters of 256M series external micrometer:

Disc type outer diameter micrometer 256M series from Starrett, USA