OHAUS M5 -505 DIFFERENCE

[oneshot 66]

I have been searching the forums looking for the difference between the Omaus M5 and the 505. They physically look the same except for the bolt adjustment just behind the pointer on the M5. Anyone know?
Regards,
Scott

 

[oneshot 66]

Sorry about the misspelling on the title.

 

[oneshot 66]

Roman numeral M = 1000
Lyman M-5 with the additional counterweight supplied weighs up to 1005 grains
The 505 without the supplied weight is only capable of .... 505 gr

Is there anything physically different? Like magnets or bearings?

 

[d1686]

I have both and m5 is much more repeatable I did not like the 505

 

[1066]

I have been searching the forums looking for the difference between the Omaus M5 and the 505. They physically look the same except for the bolt adjustment just behind the pointer on the M5. Anyone know?
Regards,
Scott

Really no difference. (We're talking about the old 505 here, similar to the M5) They both have exactly the same knife edge and same floating agate bearings and the same magnetic damping. They are both two poise scales. The differences are that the 505 doesn't have the auxiliary weight that hangs on a stud on the beam to allow weighing up to 1,005 grains and the 505 has a much larger pan hanging in a wire frame.
To me, the large pan/wire frame is the only minus point for the 505 - it's a pain to use compared to the smaller pan on a platform. The later pan and hanger can be fitted if you can find one, you would just need to rebalance the beam by adjusting the weight pan.

 

[oneshot 66]

Really no difference. (We're talking about the old 505 here, similar to the M5) They both have exactly the same knife edge and same floating agate bearings and the same magnetic damping. They are both two poise scales. The differences are that the 505 doesn't have the auxiliary weight that hangs on a stud on the beam to allow weighing up to 1,005 grains and the 505 has a much larger pan hanging in a wire frame.
To me, the large pan/wire frame is the only minus point for the 505 - it's a pain to use compared to the smaller pan on a platform. The later pan and hanger can be fitted if you can find one, you would just need to rebalance the beam by adjusting the weight pan.

1066,
Looks like there isn't ballast on the 505. How do you tune it without ballast?
Scott

 

[Homerange]

1066,
Looks like there isn't ballast on the 505. How do you tune it without ballast?
Scott

Oh but there is, in the pan holder.
Had to add a teeny bit of lead to mine recently to get the leveling adjustment wheel back into mid-range.
But hey, as it's 45 yrs old now later versions might be different.

 

[1066]

1066,
Looks like there isn't ballast on the 505. How do you tune it without ballast?
Scott

I seem to remember that the large pan of the 505 has a small weight box on the handle/lifting tab, I think it's riveted together but easily drilled out.

 

[oneshot 66]

I seem to remember that the large pan of the 505 has a small weight box on the handle/lifting tab, I think it's riveted together but easily drilled out.

I think you are correct, mine has need drilled out. I'll add weight there.
Thanks,
Scott

 

[PhilC]

Here are the Ohaus, not Lyman or RCBS, 505 and 1010 side by side. Other than the pan/hanger assy, and no 500gr to weigh up to 1005 or 1010gr (how many of us really need that?), they are essentially identical far as I can tell. The 505 is clearly older than the 1010.

On my wife's diabetic kitchen scale, the 505 weighs 2lb, 9 1/8 oz and the 1010 weighs 2lb, 14 3/8 oz. The 505 is literally "as new" and was an outstanding score at $30 shipped. For a balance beam scale, other than the easily replaced pan/scale, I consider them a great bargain.

 

[oneshot 66]

I received a 10-10 scale I purchased off this forum and noticed it has a blued metal strip underneath running from below the agates to below the magnets. What is the purpose?

 

[TAJ45]

I had never seen a pan that size. That is humongous.

 

[Texas10]

I received a 10-10 scale I purchased off this forum and noticed it has a blued metal strip underneath running from below the agates to below the magnets. What is the purpose?

That is a spring to help the beam off the bottom stop, so it doesn't stick.

 

[TrapperBR549]

Here are the Ohaus, not Lyman or RCBS, 505 and 1010 side by side. Other than the pan/hanger assy, and no 500gr to weigh up to 1005 or 1010gr (how many of us really need that?), they are essentially identical far as I can tell. The 505 is clearly older than the 1010.

On my wife's diabetic kitchen scale, the 505 weighs 2lb, 9 1/8 oz and the 1010 weighs 2lb, 14 3/8 oz. The 505 is literally "as new" and was an outstanding score at $30 shipped. For a balance beam scale, other than the easily replaced pan/scale, I consider them a great bargain.

View attachment 1177791

Isn't the single grain/0.10 grain adjustments quite a bit different? I have an RCBS 1010 and don't really care for the adjustment. If you are close to another 10 grain adjustment, say at 59 and going to 60 you have to spin the adjustment a long way. The 505 is a whole lot faster and easier to adjust. I can't speak to accuracy of them.

 

[1066]

Isn't the single grain/0.10 grain adjustments quite a bit different? I have an RCBS 1010 and don't really care for the adjustment. If you are close to another 10 grain adjustment, say at 59 and going to 60 you have to spin the adjustment a long way. The 505 is a whole lot faster and easier to adjust. I can't speak to accuracy of them.

Yes, the 10/10 and the old 505 have different poise systems - the OP was referring to the old 505 and the Lyman M5, both very similar two poise scales but with different powder pans.

 

[Chuckhunter]

Purchased this scale when I first started reloading in 1970, used it until 6 years ago when I got into 1000 yd Benchrest and determined I needed to load to the hundredth of a grain to stay with the big boys. Since then I have had it tuned by Scott Parker and it still comes into play loading all of my hunting ammo. This one was one of the ones from Florham Park, N.J. Don't remember exactly what I paid for it, I think it was in the $30. dollar range. What a great value and wonderful product.

 

[Homerange]

Purchased this scale when I first started reloading in 1970, used it until 6 years ago when I got into 1000 yd Benchrest and determined I needed to load to the hundredth of a grain to stay with the big boys. Since then I have had it tuned by Scott Parker and it still comes into play loading all of my hunting ammo. This one was one of the ones from Florham Park, N.J. Don't remember exactly what I paid for it, I think it was in the $30. dollar range. What a great value and wonderful product.

Interesting, my 505 is just a few years younger and IIRC purchased mid 70's and unlike yours mine has 0-10gr and 0-1gr adjustment on the beam.

 

[Chuckhunter]

That is interesting, my father purchased one about a year after I did and it was identical to mine. I see yours was also made in Florham Park, N.J. Curious as to when they made the change.

 

[Homerange]

That is interesting, my father purchased one about a year after I did and it was identical to mine. I see yours was also made in Florham Park, N.J. Curious as to when they made the change.

I have the original carton and paperwork it came with so I'll have a look for any date clues.....stand by....
1974 it seems.....from the coding at the bottom right of the warranty and manual.

 

[1066]

Purchased this scale when I first started reloading in 1970, used it until 6 years ago when I got into 1000 yd Benchrest and determined I needed to load to the hundredth of a grain to stay with the big boys. Since then I have had it tuned by Scott Parker and it still comes into play loading all of my hunting ammo. This one was one of the ones from Florham Park, N.J. Don't remember exactly what I paid for it, I think it was in the $30. dollar range. What a great value and wonderful product.

This two poise scale would be more commonly know as the RCBS 502 scale. The original 505 that the OP was referring to looks similar to a RCBS 10/10.