This discussion is now closed.

Check out other Related discussions

Set Squares

trixx

Does anyone know how to use set squares to measure the diameter of something? :confused:

Reply 1

Golden Maverick

trixx

Does anyone know how to use set squares to measure the diameter of something? :confused:

Diameter? Are you sure you mean a set square? I can't imagine it would be very useful to measure the diameter of something!

Reply 2

trixx

I got this from an examiner's report (edexcel) but i can't find any info on how to do this.

Reply 3

Golden Maverick

trixx

I got this from an examiner's report (edexcel) but i can't find any info on how to do this.

Hmm. Just guessing here, but how about putting your cylinder on a table on its side, and using the set square against the table to measure the highest point. lol can't see it being very useful!

Reply 4

trixx

Thanks anyway. A bit slow in here today. someone who knows might come along later.

Reply 5

RichE

trixx

Does anyone know how to use set squares to measure the diameter of something? :confused:

put two of the corners of the set square (call these A and B with the right angle of the set square at B) on a circle and then the other edge BC (extended if necessary) leads to the point diametrically opposite A

this is because a diameter subtends a right-angle in a semicircle

Reply 6

Twiglet

yeah, but surely that only works if u're circle is big enough? Clever way of doing it tho!

Reply 7

trixx

RichE

put one two of the corners of the set square (call these A and B with the right angle of the set square at B) on a circle and then the other edge BC (extended if necessary) leads to the point diametrically opposite A

huh?

Reply 8

RichE

franks

yeah, but surely that only works if u're circle is big enough? Clever way of doing it tho!

well one of the sides of the set square has got to be less than a diameter I grant you

Reply 9

RichE

trixx

huh?

there was a typo - should have said "put two of the corners..."

Reply 10

trixx

RichE

there was a typo - should have said "put two of the corners..."

O ok. Thanks

Reply 11

m:)ckel

Was this from the May 2002 PHY5 paper- the one with the cans? (or something like that). Cos we were doing this in school today.
Anyway, here's a diagram (hopefully it's self-explanatory):

set squares.GIF3.3KB

Reply 12

trixx

mockel

Was this from the May 2002 PHY5 paper- the one with the cans? (or something like that). Cos we were doing this in school today.
Anyway, here's a diagram (hopefully it's self-explanatory):

Thank you so much.