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2. Threaded rod - Wikipedia

   en.wikipedia.org/wiki/Threaded_rod

   Metric threaded rods are marked on the end with a color code to define the ISO strength class. The color codes are: [9] Unmarked — 4.6 class (tensile strength = 400 N/mm 2, yield strength 240 N/mm 2) Yellow — 8.8 class (800 N/mm 2, 640 N/mm 2) Green — A2 stainless steel (304) Red — A4 stainless steel (316) White — 10.9 class (1000 N ...

3. Radius gauge - Wikipedia

   en.wikipedia.org/wiki/Radius_gauge

   Every leaf has a different radius, for example with radius intervals of 0.25 mm or 0.5 mm. [4] The material of the leaves is stainless steel. Each gauge is one of two types; either internal or external, which are used to check the radius of inner and outer surfaces, respectively.

4. Policeman (laboratory) - Wikipedia

   en.wikipedia.org/wiki/Policeman_(laboratory)

   A picture of stainless steel laboratory policeman. A policeman is generally a flexible natural-rubber blade attached to a glass rod, which is typically 5 mm to 6 mm diameter and 150 mm long. However, it also comes in various sizes and shapes depending on its uses. The rubber material provides chemical resistance.

5. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   where is the tap drill size, is the major diameter of the tap (e.g., 10 mm for a M10×1.5 tap), and pitch is the pitch of the thread (1.5 mm in the case of a standard M10 tap) and so the correct drill size is 8.5 mm. This works for both fine and coarse pitches, and also produces an approximate 75% thread.

6. Stainless steel - Wikipedia

   en.wikipedia.org/wiki/Stainless_steel

   The average carbon footprint of stainless steel (all grades, all countries) is estimated to be 2.90 kg of CO 2 per kg of stainless steel produced, [97] of which 1.92 kg are emissions from raw materials (Cr, Ni, Mo); 0.54 kg from electricity and steam, and 0.44 kg are direct emissions (i.e., by the stainless steel plant). Note that stainless ...

7. Measuring rod - Wikipedia

   en.wikipedia.org/wiki/Measuring_rod

   A measuring rod is a tool used to physically measure lengths and survey areas of various sizes. Most measuring rods are round or square sectioned; however, they can also be flat boards. Some have markings at regular intervals. It is likely that the measuring rod was used before the line, chain or steel tapes used in modern measurement. [1]