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We have constructed a scanning low-Tc superconducting quantum interference device (SQUID) microscope, inwhich the SQUID is mounted on the lower end of a copper rod and cooled to liquid helium temperature. There isa 65μm thick sapphire window under the SQUID. The sample at room temperature undeeath the window can bescanned to produce magnetic images. The microscope has a spatial resolution of 100-150μm and a magnetic fieldsensitivity of 3-60pT/√Hz in a magnetically unshielded environment. We have used this scanning SQUID microscopeto measure various room temperature samples.