Look up terms beginning with:
1. n. 
A permanently fixed marker cited in surveying, such as a concrete block or steel plate, with an inscription of location and elevation.
2. n. 
A standard against which the performance of processes are measured.
To download this file you first sign in to your Schlumberger account.
Don't have an account? Click below to get started.
Premium content requires special account permissions. We need a little more information from you before we can grant you access.