Gasket Thickness Micrometer
To measure thickness of the indentation mark in gaskets
Description
A micrometer (with its own stand) specifically designed to measure the thickness of gaskets used in diamond anvil experiments. The micrometer has a resolution of 0.00005 in./0.001 mm and digital display.
The tips of the micrometer have a conical shape ending a round end which is shaped as a half sphere.
The conical tips have a 15° angle, finishing with a diameter of 0.60 mm. The half sphere has a radius of around 0.30 mm.
This make this device suitable to measure gasket indentation down to 0.20 – 0.30 mm in diameter depending on the depth of indentation.
Specifications
| Electronic features | Mechanical features |
| Resolution 0.00005in./0.001mm | Carbide tipped measuring faces |
| Origin setting | Ratchet thimble/friction thimble for constant measuring force |
| Incremental or Off-set zero operation | Spindle lock clamp |
Almax easyLab is committed to its policy of continuous improvement. Specifications may change without notice. easyLab and Diacell are registered trademarks of Almax easyLab.
FAQs
What is the minimum culet size that can be used with the micrometer?
The gasket thickness micrometre has a tip which typically has a radius of 0.30 mm.
Consequently the minimum culet size will depend on the shape of the diamond anvil used to pre-indent the gasket.
The shallower the pavilion angle of the diamond, the smallest the culet size will be.
The table below gives an approximate idea of calculated culet sizes as function of the pavilion angle
| Pavillion angles (*) | 15° | 20° | 21.8° | 25° | 37° | 40° | 41.7° |
| Min. Culet size (mm) | 0.08 | 0.11 | 0.12 | 0.13 | 0.20 | 0.22 | 0.23 |
(*) Typical angles used on Almax easyLab diamond anvils. Note that the values above are only indicative.
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