Reihys jeh studeyryn mullagh son mullagh croghey

Reihys jeh mullagh s'yrjey

Soilshaghey magh tommanyn ry-hoi ayns millimeteryn;

X - Leed thie.
Y - Ard y mullagh;
C - mean y chrosh;
B - fad y mullagh.

Kiune

Ta'n program er ny yannoo dy reih studeyryn towse mullagh s'yrjey: yn earroo dy studeyryn sheet (ondulin, nulin, sclate ny tileyn metal), stoo mullagh; (glassine, felt son mullagh), n'oor dy boardyn as rafteryn.

Arrey! Ta mee er n'yannoo rish dy vel y program ry-hoilley sheet studeyrys ry-hoilley er y slyst.
Mar s'cosoyley, 2.9 row 7.6 sheet 'sy row. Tra t'eh ry-thooilley, t'eh 3 rows.
Son y rheynn shoh y ghlenney, shegin dhyt y sheet y luggey derrey t'ou geddyn mysh rowyn immeeaght.

As lurg shen, bee program er-lheh son rieughid ny s'inshley jeh studeyrys roofing.

As nagh jean oo diu dy cheannagh studeyryn towse lesh reserve.