SILVA EXPLORER COMPASS WITH 123 SYSTEM LUMINOUS WATERPROOF
Dimensions: 2.2" x 4.4" x 0.4". 
360 degree graduation. 
Scales: inch and mm. 
Waterproof. 
Romer scale: 1:24k mile, 1:25k, 1:40k, 1:50k. 
Magnifier. 
Turnable housing. 
Red and black North/South lines. 
Scale lanyard and slope card. 
Night use up to four hours. 
Clinometer. 
Declination adjustment.