Description
The RCBS Vernier Ball Micrometer (item 87324) is a mechanical micrometer with a ball anvil for measuring the neck wall thickness of rifle and pistol cases, the measurement behind neck turning and bushing-die selection. The ball reaches inside the case neck so the reading is the true wall thickness at that point, not the outside diameter. Range 0 to 1 inch with 0.0001″ graduations, an all-metal body and thimble in a matte finish, a ratchet stop for consistent pressure and a thimble lock to hold a reading. Supplied with an adjustment wrench in a fitted plastic case. Not suitable for .17 calibre necks. RCBS is distributed in Australia by NIOA and stocked at 3 Gun Tactical, Tingalpa, Brisbane.
Key features
- Ball anvil for case neck wall thickness
- Range 0-1 in; graduations 0.0001 in
- All-metal body and thimble, matte finish
- Ratchet stop and thimble lock
- Includes adjustment wrench and fitted plastic case
- Not for .17 calibre
- RCBS item 87324
Frequently asked questions
What is a ball micrometer for?
Measuring case neck wall thickness so you can sort brass, choose the right neck bushing or set up a neck turner.
Is it digital?
No. It is a mechanical vernier micrometer with 0.0001″ graduations.
Does it fit .17 calibre cases?
No. RCBS states it is not for .17 calibre.
Reloading dies, scales and measuring tools are not firearms or ammunition and ship Australia-wide without a licence; powder, primers and projectiles are not included. Specifications from RCBS (rcbs.com); Australian distributor NIOA. 3 Gun Tactical, Licensed Firearms Dealer 50001578, Tingalpa QLD.





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