Bar chart
A bar chart (OHLC chart) draws each period as a vertical line from the low to the high, with a small tick to the left at the open and a tick to the right at the close.
It shows the same four prices as a candlestick chart, drawn as a ruler instead of a body. Bar charts were the chart of Wall Street: Richard Schabacker built his chart patterns on them in the 1920s and 1930s, drawn by hand on graph paper, and Edwards and Magee made them famous in 1948. Each period on it is a bar.
Learn more: price charts explained and bars vs candles.