They are also of the "straight design, .i.e the fork legs are parallel with the head tube as opposed to the legs being angled forward slightly giving the bicycle a longer wheelbase. To compensate the Bottema M-1 fork had a one inch axle lead.
They exhibit a "straight design" where the fork legs are parallel to the head tube, as opposed to the angled configuration that would increase the wheelbase length. To mitigate this, the Bottema M-1 fork had an axle lead of one inch.