I know, what?
I stumbled across an interesting series of articles about converting to metric:
https://www.google.com/url?sa=t&rct...mDAhFpjKi9lsnnltA&sig2=2-JMm-257Qu5NbVPHuTqdQ
In terms of me I'd like to share a few things:
One time I was replacing a blower resistor in a car and the fastener was metric, but the only tool appropriate for the job was a swivel socket. An adapter would not work. I didn;t realize at the time that an English dimension was so close, so it too much longer to complete the job.
Machining metric stuff was hard when you didn;t have say metric mills to go with it. I don't mind working in mills or 0.001 inches.
I still don't have a good feel for metric dimensions because the English one are so close to body parts. e.g. the foot.
Metric speeds and distances have not caught on at all yet and one road near me was all metric, bit they changed it back.
I don't like metric and English fasteners on the same thing. That was a problem with automobiles and disk drives for a while.
I didn't like having to double everything - metric sockets. English sockets, metric screwdrivers and the metric adjustable wrench.
For fun, when I'm ask how tall I am, I say 5'12" and one time someone thought that 5'12" was taller than 6 foot. It's fun to tripp up a medical professional.
I absolutely HATE the metric units for pressure. The numbers are just WAY too big. I'd rater 32 PSI for tires and not some ungodly uniit of KiloPascals. Torr and milli-torr aren't too bad.
One of the biggest eye openers was trying to figure out what there were so many bolts on a vacuum system flange. I don;t quite remember the values, but it was something like an 6-8" port has like 760 PSI of force on the port. Now you know why there are so many bolts along the flange. See conflat flange: https://www.pchemlabs.com/product.asp?pid=2250 e.g. 14.7 lbs/sqin adds up fast. Area of a circle is PI * R^2
This is why I would not try to plug a vacuum leak with those systems with your fingers.
Gardening is a pain, when 3 teaspoons is equivalent to 1 tablespoon. Mixing problems are tough. e.g. Spread 2 oz of chemical for 1000 sq ft when the chemical can only be sprayed in certain fixed amounts per gallon, so you have to pre-dilute the solution you start with, So, you want to spray about 10 gallons of the mixture to cover 1000 sqft. Yuk!! I solved that problem easy enough by finding a calculator online and adding a battery powered Gallon meter to the garden hose. The only problem is, I bup the reset button if I'm not careful.
I'm also not crazy of the unit UNIT. e.g. 10 units of U100 insulin. There exist U300, U200 and U400 insulins, but currently not syringes designed for it. U100 insulin has 100U of Insulin per 1 mL of volume.
I digress a bit...
Lab training videos are always useful. They can show the dangers and devastation. Doing a Job Hazard analysis of a particular job really helps.
I stumbled across an interesting series of articles about converting to metric:
https://www.google.com/url?sa=t&rct...mDAhFpjKi9lsnnltA&sig2=2-JMm-257Qu5NbVPHuTqdQ
In terms of me I'd like to share a few things:
One time I was replacing a blower resistor in a car and the fastener was metric, but the only tool appropriate for the job was a swivel socket. An adapter would not work. I didn;t realize at the time that an English dimension was so close, so it too much longer to complete the job.
Machining metric stuff was hard when you didn;t have say metric mills to go with it. I don't mind working in mills or 0.001 inches.
I still don't have a good feel for metric dimensions because the English one are so close to body parts. e.g. the foot.
Metric speeds and distances have not caught on at all yet and one road near me was all metric, bit they changed it back.
I don't like metric and English fasteners on the same thing. That was a problem with automobiles and disk drives for a while.
I didn't like having to double everything - metric sockets. English sockets, metric screwdrivers and the metric adjustable wrench.
For fun, when I'm ask how tall I am, I say 5'12" and one time someone thought that 5'12" was taller than 6 foot. It's fun to tripp up a medical professional.
I absolutely HATE the metric units for pressure. The numbers are just WAY too big. I'd rater 32 PSI for tires and not some ungodly uniit of KiloPascals. Torr and milli-torr aren't too bad.
One of the biggest eye openers was trying to figure out what there were so many bolts on a vacuum system flange. I don;t quite remember the values, but it was something like an 6-8" port has like 760 PSI of force on the port. Now you know why there are so many bolts along the flange. See conflat flange: https://www.pchemlabs.com/product.asp?pid=2250 e.g. 14.7 lbs/sqin adds up fast. Area of a circle is PI * R^2
This is why I would not try to plug a vacuum leak with those systems with your fingers.
Gardening is a pain, when 3 teaspoons is equivalent to 1 tablespoon. Mixing problems are tough. e.g. Spread 2 oz of chemical for 1000 sq ft when the chemical can only be sprayed in certain fixed amounts per gallon, so you have to pre-dilute the solution you start with, So, you want to spray about 10 gallons of the mixture to cover 1000 sqft. Yuk!! I solved that problem easy enough by finding a calculator online and adding a battery powered Gallon meter to the garden hose. The only problem is, I bup the reset button if I'm not careful.
I'm also not crazy of the unit UNIT. e.g. 10 units of U100 insulin. There exist U300, U200 and U400 insulins, but currently not syringes designed for it. U100 insulin has 100U of Insulin per 1 mL of volume.
I digress a bit...
Lab training videos are always useful. They can show the dangers and devastation. Doing a Job Hazard analysis of a particular job really helps.
