5mm in a tape measure?

[jenni0611 0]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

[HongKong2LA 9]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

just under 1/4" inch

[Otto 83]

[FrombeachParadise 0]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

5mm is half of 1cm...

[Kar98 0]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

Edited May 16, 2009 by Kar98

[Otto 83]

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

...

[jhunjhun 7]

5 mm = 0.5 cm

5 mm = 0.005 m

5 mm = 0.000005 km

5 mm = 0.19685 in

5 mm = 0.016404 ft

5 mm = 0.005468 yard

5 mm = 0.000003 mile

[Gary and Alla 3,694]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

5mm = .204"

I imagine you mean 5 cm, not mm. (photo size?) 5cm is just shy of 2", but close enough for government work, as they say. 2.54 cm = 1 inch.

[Gary and Alla 3,694]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

Of course you are referring to bore diameter diameter, not groove diameter. which would be:

.308=7.62mm

.357 is the groove diameter, an anomaly to be sure, but something over the .355" inch of the 9mm

and of course, we cannot leave out Ma Duece at .510= 12.7mm

[justashooter 430]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

Of course you are referring to bore diameter diameter, not groove diameter. which would be:

.308=7.62mm

.357 is the groove diameter, an anomaly to be sure, but something over the .355" inch of the 9mm

and of course, we cannot leave out Ma Duece at .510= 12.7mm

the history of the nomenclature is actually quite interesting.

early black powder revolvers had bores of about .31/32, .36/38, and .45" in groove diameters, but these varied widely (from a machinist's standpoint) among manufacturers, typically .315, .375, and .454. bores and cylinders tended to run a few thou tight, expecting that lead balls would be cast to nominal, shaving and obturating during the loading and firing process.

conversion cylinders for these BP revolvers were made by boring out standard muzzle loading cylinders and backing them up with a transfer ignition plate. to accomodate the existing diameters of cylinders and barrels the cartridges designed for use in them included cases of OD same as bore, with bullets having a reduced base diameter (heel type). the heel typically also had a hollow base which was intended to expand against the bore to better engage the rifling and increase stability, thus accuracy.

later revolvers manufactured expressly for cartridge use were designed for "inside lubricated" cartridges that fit into the same cases that heel types had, but were case ID for their full length. heel types had grooves outside the case filled with beeswax, so keeping them in pockets or hot weather was messy. inside lubed types were easier to store. bore diameters were reduced to .312, 357, and .452 during this design change period.

so now we have 32 autos that are really .312, 38 specials that are really .358, and 45 acp that are really .452. then you add in 357 mag, still in a .357 bore, adn 44 mag in a .429 bore, and you really have a mess. one street at a time the map was drawn...

[Kathryn41 3,205]

Moved from AOS forum to Off-topic

[Niels Bohr 72]

Is that how you remembered them?

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

[AlHayatZween 2]

hello mga vj's,

anyone here know's how to identify 5mm size in a tape measure?

thanks for those who reply

Familiarize yourself with ammunition calibers. 10mm = .40 inches. Hence 5mm - .2 inches.

.30 = 7.6 to 8mm

.357 = 9mm (the .357 cartridge is much longer than the 9mm one, hence more powerful)

.50 = 12.5mm

Those aren't scientifically accurate, but close enough to remember and sufficient for most purposes.

[PhiLandShiR 18]

I once made a cannon out of 2000 PSI steel tubing...

1.72 inches ID and shot a golf ball with an OD @ 1.68 over a mile...

Punched a neat hole through 1 inch wooden plank.

I uses a M80 as a charge. Welded a lenght of pipe just inside the base for a chamber and used a screw cap to close it off.

Had a muzzle blast of about 3 feet of really pretty orange flames too!

Edited May 18, 2009 by PhiLandShiR

[NickD 202]

one millimeter equals 0.0397 inches, I just round that off to 0.040" close enough for government work as they say. That puts 25 mm in an inch, but the actual value is 25.4.

So 5 mm would be five times 40 mils or 200 mils or 0.200 inches or 1/5th of an inch. If you want to get critical, the difference between 0.040 and 0.03937 is 0.00063, rounding that off to 0.0006 would be about 0.003 less than 0.200 or 0.197 inches, can subtract another 0.00015" from that for the five times 0.00003 to get 0.19685" if you want to be exact. Can do all this in your head.