tungwaiyip.info

home

about me

links

Blog

< June 2005 >
SuMoTuWeThFrSa
    1 2 3 4
5 6 7 8 91011
12131415161718
19202122232425
2627282930  

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

Google map scale

It always frustrate me to find maps don't come with scale. It is particular important if you try to judge whether a route is within walking distance. Google map is an incredible tool. But it needs to show the scale too!

So I have decided to make my measurements and come up with some reasonable estimate. I will use the zoom control as the scale. Up to 9 zoom levels were measured with level 1 being the most detail. The distance between the center of + mark and the - mark, is shown below. Beware that the projected images near the poles (e.g. Helsinki,Finland) seems significantly distorted.

LevelDistance
1230m
2450m
3870m
41.7km
53.3km
66.4km
712km
824km
947km

2005.06.24 [] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

US election: McConnell promises an 'orderly' transition of power (24 Sep 2020)

 

California wildfire trend 'driven by climate' (24 Sep 2020)

 

Cardinal Becciu: Vatican official resigns unexpectedly (24 Sep 2020)

 

Coronavirus: Are the lockdown restrictions too strict? (24 Sep 2020)

 

Breonna Taylor: Family lawyer slams 'devilish' grand jury outcome (24 Sep 2020)

 

Magawa the mine-detecting rat wins PDSA Gold Medal (24 Sep 2020)

 

UK chancellor defends emergency jobs scheme (24 Sep 2020)

 

Chen Qiushi: Chinese journalist missing since February 'under state supervision' (24 Sep 2020)

 

Germany far right: Intelligence chief forced out amid criticism (24 Sep 2020)

 

Pregnant woman rescues husband from shark attack in Florida (24 Sep 2020)

more »

 

SF Gate

 

Ship traffic, September 25 (24 Sep 2020)

 

Ship traffic, September 24 (23 Sep 2020)

 

Ship traffic, September 23 (22 Sep 2020)

 

Ship traffic, September 22 (21 Sep 2020)

 

Ship traffic, September 21 (20 Sep 2020)

 

Ship traffic, September 19 (18 Sep 2020)

more »


Site feed Updated: 2020-Sep-24 18:00