the length of the brass handle is included in the length of chain

the handles are on swivel joints to prevent twisting of the chain

the fifth tag from either end of the chain is numbered 5

All of these

passes clear of hill top C

passes below the hill top C

grazes the hill top C

none of these.

horizontal hairs

vertical hairs

horizontal and two vertical hairs

none of these.

in all angles equally

which does not vary with the direction or pointing

which varies with the direction of pointing and inversely with the length of sight

none of these.

if second reading is more than first, it represents a rise

if first reading is more than second, it represents a rise

if first reading is less than second, it represents a fall

both if first reading is more than second, it represents a rise and if first reading is less than second, it represents a fall