According to this Wyatt is the height of a 3yr old at 18months and Keegan is 1inch off the height of a 4yr old :-)
Wooden Baby Growth & Milestone Chart - Adventures in Renovating a Brooklyn Limestone
DIY Ruler Growth Chart
Wooden height chart kids height chart nursery by PaolaBrownShop
42 Craft Project Ideas That are Easy to Make and Sell - Big DIY IDeas
thrifted clipboards used to create a gallery wall for kids artwork, calendars, photos, and anything else you might want to display or need access to! | home is what you make it
36 Ingenious Things You'll Want As A New Parent, this growth chart looks like it could be a fun diy project.
crab+fish: DIY:giant ruler growth chart! More
Create a height chart to hang in your home! Keep track of your children’s growth over the years by making this fun and useful project with your kids. Find the full set of directions, and many more inspiring projects, on fiskars.com!
Hey, I found this really awesome Etsy listing at https://www.etsy.com/listing/199639824/wooden-height-chart-childrens-growth