Taper Micrometer

[mgaul]

Hello everyone,

I have a question regarding the calibration of Taper Micrometers with standard gauge blocks.

the only identifying info on this Micrometer is the #  n02s1614

I have not been able to find any info on the net or in my companys technical library. 

Does anyone have any information or knows who would? 

I have no idea where to start 

[tater]

if you have any info on plain taper plugs or NPT plugs cal might be a good place to start.