Marine Clinometer /Clinometer Dial Type Brass     Dial Type Marine Nautical Brass Clinometers 180MM    MODEL:GL198-CL    Material:Brass    Base: 7"(180MM)    Dial: 5"(124MM)    Depth:1-3/4"(45MM)    FEATURE:    Waterproof / Tarnishproof     A clinometer is required for positioning a vessel on a proper trim.  It also indicates the correct heel angle and is helpful in determining the appropriate locations for cargo and equipment.  A pair of clinometers, one installed on the keel axis and the other on the beam axis, will give the necessary and accurate indications for adjustment of the trim angle.