Moltaghtyn
Ta'n foirmle ymmyrchagh
Ta doigh y steep doaltattym
Corneil ymmyrchagh jeh'n stairs 39.8°
Staircase ymmyrchagh
Shilley er thalloo
Shilley roish
Diagram stayd
Shilley erskyn
Tarroogh bowstring
Tarraing step
Data toshiaght
Ard staar. 2.5 m (2500 mm)
Fad y staircase foshlit ayns plan 3000 mm
Lhiasaghey ny steatyn 13
Thie y steep 50 mm
Overhang jeh steepyn 50 mm
Strein staar.
Fad string 4167 mm
Corneil staar. 39.8°
Meanyn step
Ard y step 192 mm
Doigh y step 281 mm
Ard y riser 142 mm
© Reihys ladder er bowstring