Micrometer and callipers are examined and determine the measuring blocks Surveyed the micrometer Size Amount 0-25 2.5,5.1,7.7,10.3,12.9,15,17.6,20.2,22.8,25 10 25-50 25,27.5,30.1,32.7,35.3,37.9,40,42.6,45.2,47.8,50 11 50-75 50,52.5,55.1,57.7,60.3,62.9,65,67.6,70.2,72.8,75 11 75-100 75,77.5,80.1,82.7,85.3,87.9,90,92.6,95.2,97.8,100 11 Surveyed the callipers Size Amount 0-125,0-150 41.2,81.5,121.8,10,20,20 6 0-150 41.3, 131.4 2

Ceramic Plates

Product detail:
High hardness in material super resistance in abrasion ensure accuracy for a lasting time.
Best corrosion resistance, easy to maintain.
Light mass, high accuracy, and cheaper price.
The Dimensions can be made to customer's requirements or specifications.
Accuracy:
The measuring face produce have superion precision, the finishing platness<1μm;
The middle of measuring face is slightly convex.
The bonding attachment is made by stainless steel or copper which is corrosion resistance.
Physical Specification:

Material Ceramics Hardness(HV) 1800 Thermal expansion coefficient (10/°C) 8 Specific gravity (g/cm) 3.8 Flexural strength (MPa) 300-350 Young's modulus (10 kgf/mm) 3.7 Poisson's ratio 0.23 Thermal conductivity (cal/cm. sec.°C) 0.07

Specification:
100×100×20mm
85×85×20mm
80×80×20mm
specifications can be asked having something made to order according to customer

Precision block

All the six planes of the precision blocks have been ground and polished with high precision.
The errors of perpendicularit of all planes are no larger than 0.0001"/1"
The two gauge blocks with a precision of 1×2×3 in each box can be utilized in pairs.

Optical parallels

Product detail:
Three types ( single - side , double - side , parellel ) available for various occasions
Measuring the evenness and depth of parallelism
The evenness error of grade - one optical flat is no lager than 0.03 μm , and the evenness error of grade-2 is no larger than 0.01μm
The technical specififcations of the set of four milscale specialized optical flats are:
(a) Measuring face evenness error : smaller than 0.03μm for grade - one smaller than 0.10μm for grade - two
(b) Depth of parallelism error : smaller than 0.20μm
(c) External diameter : 30mm
(d) Thickness : 12.00mm , 12.12mm . 12.25mm . 12.37mm
The set of four optical parallel flats can be used to measure the parallelism depth deviation of the milscale's two opposite measurement planes ; The deviants in four directions including 0° , 90° , 180° and 270° can be obtained
Specification:φ30,φ45,φ60.