11bravo
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I have an RCBS 10-10 reloading scale that I have been using for rocketry.
It is capable of reading out to 1010 grains which equals out to 2.3086 ounces or 65.4469 grams; 7,000 grains = 1 pound.
I attached a Paint drawing that pretty closly resembles what I have and replicates the functionality.
To read it, after twiddling it to get it leveled out, first get the 100's and 10's values from the course setting on the left side, in this case set to 220 grains.
On the right side the grey thing with horizontal black lines and numbers that increase as they go down is a cylinder that you rotate and it moves left or right on the threaded axle that it is on.
It is read by counting how many lines left of 0 the vertical black line towards the left end of it is; use this number as the ones value.
The 10ths are determined by subtracting 0.1 from the lowest number with it's line exposed; in this case 0.6 - 0.1 = 0.5.
The instructions say that a user can measure down to 1/10th of a grain or 1/70,000th of a pound.
However I seem to remember when learning how to use scientific instruments that the user is allowed to estimate to one decimal point between "gradiation marks".
Do I remember correctly?
Or am I having a brain fart?
In the attached, can I only read it to 200 + 7 + 0.5 for a total of 227.5, or can I interpolate between the 0.5 and 0.6 and say that it is really close to halfway and call it 227.55?
IIRC, I can go with the 227.55.
Sorry if the explanation as to how to read it was unnecessary, but I'm sure there are one or two here that have not used something like this and may not be able to understand it.
Thanks,
Greg
It is capable of reading out to 1010 grains which equals out to 2.3086 ounces or 65.4469 grams; 7,000 grains = 1 pound.
I attached a Paint drawing that pretty closly resembles what I have and replicates the functionality.
To read it, after twiddling it to get it leveled out, first get the 100's and 10's values from the course setting on the left side, in this case set to 220 grains.
On the right side the grey thing with horizontal black lines and numbers that increase as they go down is a cylinder that you rotate and it moves left or right on the threaded axle that it is on.
It is read by counting how many lines left of 0 the vertical black line towards the left end of it is; use this number as the ones value.
The 10ths are determined by subtracting 0.1 from the lowest number with it's line exposed; in this case 0.6 - 0.1 = 0.5.
The instructions say that a user can measure down to 1/10th of a grain or 1/70,000th of a pound.
However I seem to remember when learning how to use scientific instruments that the user is allowed to estimate to one decimal point between "gradiation marks".
Do I remember correctly?
Or am I having a brain fart?
In the attached, can I only read it to 200 + 7 + 0.5 for a total of 227.5, or can I interpolate between the 0.5 and 0.6 and say that it is really close to halfway and call it 227.55?
IIRC, I can go with the 227.55.
Sorry if the explanation as to how to read it was unnecessary, but I'm sure there are one or two here that have not used something like this and may not be able to understand it.
Thanks,
Greg