base mortar

base mortar

[′bās ‚mȯrd·ər]
(ordnance)
Mortar in a platoon for which initial firing data are computed and with reference to which data for other mortars in the unit are computed.
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References in periodicals archive ?
A single base mortar can be modified by using different liquids to change the material consistency as project demands change, reducing the number of materials that have to be stored on the job site.