It is helpful to know how to transfer your position to a new bike.
The following are the measurements to take:
2 Reach
3 Saddle Height
4 Saddle Setback
5 Handlebar Drop

Another way to transfer your position.
Thanks to Kevin Schmidt.
3 Measurements to Rule Them All. A simplified approach to ‘transfer’… | by Kevin Schmidt | Medium

Shorter cranks are very beneficial to avoid an extreme hip flexion when pedal at the top position. Also, the short length is helping an aerodynamic position.
​www.cyclist.co.uk/in-depth/360/bike-fit-variables-no-2-crank-length

Thanks to Matt Wikstrom for a 360 degrees article on how to decide which frame size is the right one.
​https://cyclingtips.com/2018/01/beyond-the-top-tube-things-to-know-when-sizing-up-a-road-frame/

Foot-pedal interface is very important during bike fitting. Aim is to transfer as much force from foot to pedal and at the same time allow the foot to keep a natural posture in order to not create ankle-knee-hip tensions.  Foot anatomy plays a fundamental role together with shoe. The following two pictures show frames of a video recording needed to evaluate the orthotics changes applied.

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At first glance is very important to observe where the cyclist put his/her hands on handlebar. It is an important initial sign to keep record. The optimal position is on the brake hooks.   

Bike frame geometries: what are the next changes in bike design?
Zero setback seatposts, shorter cranks, easier gears, Thanks to Julian Wall.
​http://cyclefit.co.uk/journal/are-current-road-bike-frame-geometries-outdated

10 interesting points to review on this Bicycling article: bike fitter experience, historical bike fitting dogma, indoor/outdoor differences, bike fit process needs to be explained to cyclist, start with the right frame size, bike parts changing can affect cyclist fit, fitting on one bike can be different on another, often bike fit helps to fix niggling pains, bike fit is not for life, bike fitting and rider technique.  
​http://www.bicycling.com/beginners/bike-fit/10-bike-fit-myths-busted?utm_source=t.co&utm_medium=Social&utm_term=833831060&utm_campaign=Bicycling