As a retired architect, I can say that before CAD drawing, that Add Feet Junior was a constant companion during late night sessions double checking the dimensions on our drawings. I still have mine somewhere LOL. Great little device!
Fantastic! Inspired by your calculator collection, I got an Addiator a couple of weeks ago (Omega Pocket Adding Machine) and have been trying to figure it out. Thanks for the great introduction!
You use the slide rule for multiplication and division and this and/or abacus for addition and subtraction. The advantage that the addiator has over an abacus is that the digits stay in place if you move it. They're complementary.
Great video! I remember a leather bank checkbook cover with an addiator on the interior back leather so one could balance their checkbook to their Bank statement before electric calculators really caught on for the average person. Now even the checkbook itself is rather obsolete. Man, I'm getting old and nostalgic!
I have a bunch of my grandpas old tools and just found one of these things today. Showed my mom and she had no idea what it was. I’m going to take it to my grandma and see what she says
I have one of these! Only it’s in alu colour and without the leather pouch. Inherited from my grandmother. Use some acetone to clean the leather, neatsfoot oil to give it moistness and pliability back and perhaps some light dye before the oil. Stitching this should be real easy since it’s threaded on the outside. Use waxed dyed thread though. You’ll be surprised at how good it’s possible to make it look.
I don't think you should worry about wearing it out.. I got one of these from my grandfather (all shiny aluminum colored, making me think yours was tarnished somehow) in around 1980 and I wasn't very kind to it and it's still working in 2021.
This design is really clever. The only moving parts are the sliders - no gears, no cogs - so even a high quality model is going to be a lot cheaper than any other mechanical calculator. Sure, dividing with it is a nightmare, but that's true of most mechanical calculators.
The sad part is that no one thought of this idea, until AFTER a more advanced mechanical calculator, was invented in 1623. The addiator is a good invention but its design is so simple that we as human beings should have been focused enough on innovation to have come up with the idea a lot sooner.
🇨🇦/🇺🇸... My mother had one for her grocery shopping in the '60s. I could be wrong but I THINK that you may find that that is not, in fact, brass but a coated aluminum. ??
Are you sure it's not at the end of the column? If so, there should be a red arrow in the window, you then would need to move it in the opposite direction. I'd try very light oil like naphtha (lighter fluid) before taking apart. And you don't want to use a solvent that might dissolve the paint. You'd have to carefully bend the brass tabs to take it apart. I'd be very careful.
As a retired architect, I can say that before CAD drawing, that Add Feet Junior was a constant companion during late night sessions double checking the dimensions on our drawings. I still have mine somewhere LOL. Great little device!
Fantastic! Inspired by your calculator collection, I got an Addiator a couple of weeks ago (Omega Pocket Adding Machine) and have been trying to figure it out. Thanks for the great introduction!
You use the slide rule for multiplication and division and this and/or abacus for addition and subtraction. The advantage that the addiator has over an abacus is that the digits stay in place if you move it. They're complementary.
Great video! I remember a leather bank checkbook cover with an addiator on the interior back leather so one could balance their checkbook to their Bank statement before electric calculators really caught on for the average person. Now even the checkbook itself is rather obsolete.
Man, I'm getting old and nostalgic!
I have a bunch of my grandpas old tools and just found one of these things today. Showed my mom and she had no idea what it was. I’m going to take it to my grandma and see what she says
I have one of these! Only it’s in alu colour and without the leather pouch. Inherited from my grandmother.
Use some acetone to clean the leather, neatsfoot oil to give it moistness and pliability back and perhaps some light dye before the oil. Stitching this should be real easy since it’s threaded on the outside. Use waxed dyed thread though. You’ll be surprised at how good it’s possible to make it look.
I don't think you should worry about wearing it out.. I got one of these from my grandfather (all shiny aluminum colored, making me think yours was tarnished somehow) in around 1980 and I wasn't very kind to it and it's still working in 2021.
This design is really clever. The only moving parts are the sliders - no gears, no cogs - so even a high quality model is going to be a lot cheaper than any other mechanical calculator. Sure, dividing with it is a nightmare, but that's true of most mechanical calculators.
The sad part is that no one thought of this idea, until AFTER a more advanced mechanical calculator, was invented in 1623. The addiator is a good invention but its design is so simple that we as human beings should have been focused enough on innovation to have come up with the idea a lot sooner.
Thank you for sharing this. Helped me with my Addiator a lot!
🇨🇦/🇺🇸... My mother had one for her grocery shopping in the '60s. I could be wrong but I THINK that you may find that that is not, in fact, brass but a coated aluminum. ??
Nice. Brings back memories.
I have an addiator like the one in the video but mine looks like it's made from steel instead of brass.
I got mine in 1964 & still have it.
Oo you're so fancy with the brass edition
Thank you, I have one just like it. At least now I know how to use it.
Today I just discovered one at my family’s home
I got my today, the hundreds column is stuck. How safe do you suppose is to try to take it apart?
Are you sure it's not at the end of the column? If so, there should be a red arrow in the window, you then would need to move it in the opposite direction. I'd try very light oil like naphtha (lighter fluid) before taking apart. And you don't want to use a solvent that might dissolve the paint.
You'd have to carefully bend the brass tabs to take it apart. I'd be very careful.
@@Joe_VanCleave as I started using it it became smoother on it's own.
Corriento.
They have i see. To the people spirite where.