RCBS Beam Scale. Vintage.

[RCE1]

I came across this old RCBS Beam Scale. The box is marked Powder and Bullet Scale, but no other nomenclature. RCBS said it's so old they don't even know anything about it. Thought I'd post it because it's in such immaculate condition. I'm sure the pan is located incorrectly, but I wasn't sure the best place for it to hang. I'd have to guess back where the threaded section starts, but I might be wrong. At lease, it would be repeatable.

Anyone know any more about these? When they were made?

 

[old codger]

In my 50 years of reloading and gun shows I have never seen that model. My guess would be it was an early model which was quickly replaced by a better design. (In other words a short run) It has a rather unique method of setting units using the treads as divisions. It would take some care to use compared to later models with better definition of units.
Your placement of the pan seems correct.

 

[nettle]

In my 50 years of reloading and gun shows I have never seen that model. My guess would be it was an early model which was quickly replaced by a better design. (In other words a short run) It has a rather unique method of setting units using the treads as divisions. It would take some care to use compared to later models with better definition of units.
Your placement of the pan seems correct.

+1. What's the bearing surface/kinves look like?

 

[LCazador]

I remember seeing one of those in my early reloading days. I think all the scales after that were made by Ohaus. Ask our scale expert @sparker.

 

[Mike Casselton]

If you're at 50gr and zero on the pointer, I'm thinking the pan should hang from the adjustment ring about an inch to the left. Gonna assume that's how it's zeroed.

 

[std7mag]

I'm thinking that the pan hangs on the other end of the scale.

 

[Rocketvapor]

Pan hangs in loop on the right.
The two adjustment nuts probably allow both zero and scale factor adjustment.

 

[CJ6]

You have better eyes than I. I don't see the loop/hanger.

 

[Tommie]

Coolness factor is over the top

 

[Rocketvapor]

Here

 

[RCE1]

This is all great information. Thanks.

 

[rwj]

No help on scale info… but I love the term “Precisioneered” on the box lid! Gonna use that one!

 

[Bottom Fodder]

I’m almost most positive that my Cousin had one like that back in the 60’s but he is is no longer with us to ask. I think RCBS started in the 50s

 

[JMAN80]

@sparker

 

[dhagerty40]

this thread on Castboolits talks about the scale. estimates around 1967.

Ultra rare RCBS scale

I've just spotted this ULTRA RARE RCBS 1967 scale on ebay. According to the description this model was never offered to the public for sale. My guess is, and it's only a guess, is that this scale looks like it has some sort of mechanical damper. I believe this was just about the time when the...

castboolits.gunloads.com

 

[Rocketvapor]

The main adjustment is marked in 1/4 grain increments.
The fine adjustment has 5 position, maybe 0.05gr per step?

 

[Bc'z]

The main adjustment is marked in 1/4 grain increments.
The fine adjustment has 5 position, maybe 0.05gr per step?

Looks like half grain on main poise, second poise would be in tenths with .5 movement to break up the half grain adjustments of main.

 

[Rocketvapor]

1/4 or 1/2?

 

[Bc'z]

1/4 or 1/2?
View attachment 1594652

I'd venture to guess each full mark is a full grain half marks are .5, otherwise why would 2nd poise only go to 5, 6th notch on 2nd poise is zero.
@sparker

 

[Rocketvapor]

I read this setting (even though scale is set up wrong), as
50 +0.25 + 0.05= 50.255grains